Application Installation Issues

Hello,

I am attempting to install an application on a RHEL 5.10 x86_64 system. The application requires that the package libgcc in architecture i686 be installed, or the installation fails. The system in question has two instances of libgcc installed, one x86_64 and one i386, but i686 does not appear to be available.

Is there a way to install the required version of libgcc on my system that I have overlooked? If not, is there a potential method of circumventing this issue using the existing instances of the package?

Thanks for your help.