Running Two Size Monitors on Mac Pro

Hi:

I have a Mac Pro and two different size monitors – 19” and 23”. The Mac Pro sees both monitors at the same time as expected. I wish to run the two different size monitors so that the menu bar AND the full desktop area appear on each monitor. If I select “mirror monitors” then the 23” (wide screen) reduces in size to match the 19” monitor (square desktop). What I want to do is to have BOTH monitors show the exact same thing - the Menu Bar and use all of the display area/desktop for each monitor. Other than purchase another new acer 23” monitor is there a way to get both monitors to appear as if they had been connected individually – each with menu and all desktop used? How can I make this happen?

Why do I want to do this? I have two different work stations approximately 20’ apart but I am using the same Mac Pro for both work stations – using wireless mouse and wireless keyboard for the remote work station.

Thanks in advance for your assistance.