How can I get this sketch to snap to the reference point to the right of the sketch?

So I'm a rookie at SolidWorks and I've been having a cat and mouse game with sketches. When I fully define the sketch, it's locked into place. When it's under defined, I can free move it but then the geometry is no longer correct. This sketch is a footprint of a pi pico for some screw posts. I'd like to have the right midpoint perfectly on top of the point to its right.

 

Thanks!