give internet to server behind mikrotik

Hi,
I have network schema as I attached to the topic
I want to give access internet to “Linux Server”
My default route on MikroTik-2 is 172.19.98.1
I can ping the internet via MikroTik-2 now
I know maybe this is a simple question, but I am a newbie and I am sry
Untitled Diagram.jpg

You could have got a precise answer if you posted the current configurations of both routers as per my automatic signature below.

Since you haven’t, you can get just guesses:
possibility 1: there is no route to 172.16.5.0/24 via 172.19.98.2 at Mikrotik 1 nor any src-nat at eth1 of Mikrotik 2
possibility 2: the firewall at one of the Mikrotiks (or both) blocks the traffic between 172.16.5.0/24 and the internet