Mixing Two Themes

I was wondering if there is anyone who can make some suggestion regarding mixing two themes together. I’m using one where I like the layout but need another one because of it’s ability to display business listings. How can I take from the latter one and add to the first one? I’m very familiar with WP and coding little bit I just don’t know where to start. BTW I have both theme and can play around with their codes.

Thanks for your help,