Best glue for acrylic to glass?

[Beza]

So I'm rebuilding a 75gal bowfront I got for free because it was leaking. Someone cut the top brace off... who knows why, but that's what caused it to leak.

Best I can come up with to replace the top brace is acrylic sheet cut to go in 3 spots - each side and one in the middle.

Anyone know of a good product that will allow me to do something this silly? I'm working with what I've got here...