What is the other planet that is like earth?

None have been found yet. That does not mean there are none.

Think of it this way, there are as many as 500 billion galaxies in the universe, and(based on our average) there are around 300 billion stars in every galaxy. If one out of a million of those had planets, and one out of a million of those had planets in the "habitable zone", and one out of a million of those actually had life, and one out of a million of those had intelligent life, then there would be millions-hundreds of thousands of planets like Earth.

If we were the only one,(pardon the pun) it would be an awful waste of space.