Recacptcha and paypal

Hi,
i’ve a beginner at PHP.
I need my form to go through reCaptcha and then if successful onto paypal. The problem is that the form action is different for each of these. Ie.

For recaptcha:
<form action="<?php echo $path; ?>inc/mail-forms/join-enquiry-premium.php"

For paypal:
<form action=“https://www.paypal.com/cgi-bin/webscr” method=“post”>
<input type=“hidden” name=“cmd” value="_s-xclick">
<input type=“hidden” name=“hosted_button_id” value=“7TWEJ354L5VGS”>

How can i get it to go through recaptcha and then on to the paypal site?
Any help would be appreciated. Thanks.