How to redirect traffic from one physical interface to another Windows physical interface?

Question

Windows

PC1 (Special Program) ()
PC2 Windows 7
PC3 Ubuntu 20
Imagine there are 3 computers
PC1 192.168.10.10/24
PC2 (Ethernet 1) 192.168.10.250/24 (Ethernet 2) 192.168.5.128/24
PC3 192.168.5.252/24
PC1 directly PC2 is connected
PC2 is connected via the local network of the organization to PC3
The task is to transfer data from PC1 through PC2 to PC3 (server)
How and where to write traffic redirection to PC2
PC1 (it is strictly forbidden to be on the local network and access to the Internet)

By the way, port 11112 is used for data transfer

Answer 1

if the default gateway on ps2 and ps3 looks at the router, then the route to the pc network needs to be registered only on the router. routing on a dual-network ps 2 seems to work anyway. but the scheme is not for everyone.

Answer 2

On the router, say that for 192.168.10.0/24 gw 192.168.5.128 it may work like this, but I would add 192.168.5.0/24 gw 192.168.10.250 to the pc