Michigan (USA) is 11 times larger than Puerto Rico.
Area: 13,790 km2 World Factbook
Population: 3,620,897 (July 2014) World Factbook
Puerto Rico, officially the Commonwealth of Puerto Rico, is an unincorporated territory of the United States, located in the northeastern Caribbean east of the Dominican Republic and west of both the United States Virgin Islands and the British Virgin Islands. Wikipedia
Michigan is a state in the Great Lakes region of the Midwestern United States. The name Michigan is the French form of the Ojibwa word mishigamaa, meaning "large water" or "large lake". Michigan is the 9th most populous of the 50 United States, with the 11th most extensive total area. Wikipedia