Spokane, Washington is 3.1 times larger than Manhattan (NYC borough).
Area: 59 km2 calculated
Manhattan is the most densely populated of the five boroughs of New York City. The borough is coterminous with New York County, an original county of the U.S. state of New York. Wikipedia
Area: 179 km2 calculated
Spokane is a city located in the northwestern United States in the state of Washington. It is the largest city of Spokane County of which it is also the county seat, second largest city in the state of Washington, and the metropolitan center of the Inland Northwest region. Wikipedia