Like the others have said, no CX5 was ever offered with a 3rd row. There's not even room to add one really if you wanted.
Thats actually the reason i bought my CX9. I went it with plans to buy a CX5. But after shoving two baby seats into a CX5 at the dealership, i quickly realized a CX5 was not in my future. Gave the CX9 a try, and have owned it for over 2 years now. Was a great decision on my part. I really hate the ATX trans aspect. But on the same thought, its not like i could have bought a Manual CX5 with any options i wanted anyways. Like you know leather... Any real color option. So i didnt really miss out on anything by giving up on the CX5.