How to access a Web page posted on Apache Web Server installed as "Localhost"...

...on another machine ? the other machine is on the network created by the Ethernet router, both have Internet access from the router. The browser on the host (test) machine loads from the server just fine.

By the IP, a command of 'ipconfig' on the cmd of the hosting machine will give you the IP that should go, HTTP is defaulted on port 80 but if you did mess it you need to specify port too, firewall off or punctured to let traffic through of course.

Example: http://192.168.0.3:12345 for a Web server hosted by 192.168.0.3 at port 12345

you can put the IP address of the server/computer hosting Apache into the browser of the other client.

(hint:make sure that the firewall is turned off on the machine running apache)

You can also access it by machine name in browser addres bar if Netbios names are working correctly.....or the good old fashioned means of add the server machine's ip address to the host file of the client machine with whatever name you like to use.

hosts file can be opened/edited by notepad
(be sure not to add .txt extension to it when saving)

it's located at
c:\windows\system32\drivers\etc\hosts
notice there is no extension.