I'm trying to figure out how to make the right router connect to the middle router that only uses one IP Address as 192.168.20.2 has been used to connect to the left router. The picture provided is what it looks like.
The assignment was to make any PC connected to Router 1 to be able to ping PCs connected to Router 2 and/or Router 3. Here's the zipped .pkt file as requested. I'll additionally send the photo my teacher sent us to do.