Series of options here you can use just depends on need/intent but since you created feature classes for both it sounds like you want more than just X/Y you want Geometry as well:
1) From the database side create a trigger for on insert that extracts X/Y from the geometry you are collecting into fields in that table and then performing a copy based off GUID join into the other table
2) Create a stored procedure that performs these tasks based on some scheduled routine (hourly, every 4 hours, nightly, etc.)
3) Create an ESRI based ETL (model in model builder) that performs the same above tasks but additionally you could create geometry on the 2nd table using the X/Y data being copied into it (this requires ArcServer to publish the model as a service and then schedule it to run routinely using windows task manager OR it could be done manually if there's no need for automation)
4) Create a custom python script that performs the same tasks the ETL does but it can be pushed into windows task scheduler without having ArcServer and using the .py as an argument call to the python.exe
Those are some of the options but I am sure there are several more if you wanted to go down the path of FME or some other options. Most of what I offered up is focused around automation but can be done manually as well.