Trying to populate e-mail address from another a form and send e-mail notification to that e-mail

Trying to populate e-mail address from another a form and send e-mail notification to that e-mail

Hi,

I have two forms.
1.  "Staple Goods Project Purchase 5"
2.  "SG5 Registration Form"

In my "Staple Goods Project Purchase 5" form, I added a "City, State" lookup field which is attached to the respective contact e-mail address entererd in my "SG5 Registration Form". I want the "coordinator contact" field in the  "Staple Goods Project Purchase 5" form  to populate the respective e-mail address so the form can be submitted to that particular person's email in the notifications settings.

How can I achieve this?

Thanks,

Jason