Umardurrani07
If you are seeing Ezoic as a third party in your own Adsense account. It may be that your Adsense account is linked to Ezoic Adsense account but hasn't pulled through to the Ezoic system yet which is why you are seeing this in your dashboard.
Sometimes it does just need a bit of time but if you find it still shows after a few days I would suggest reaching out to your Ezoic representative or Support with your Adsense email and pub ID and they can check the setup.
For Adsense Mediation you would need to have Adsense Ads on your site which are wrapped in Ezoic Code. Here is a guide on how to wrap ads. These will them compete again Ezoic. Here is some information on how Mediation works.