Taiwan is 289 times larger than Aurora, Colorado.
Area: 35,980 km2 World Factbook
Population: 23,359,928 (July 2014) World Factbook
Taiwan, officially the Republic of China, is a state in East Asia. The Republic of China, originally based in mainland China, now governs the island of Taiwan, which makes up over 99% of its territory, as well as Penghu, Kinmen, Matsu, and other minor islands. Wikipedia
Area: 125 km2 calculated
The City of Aurora is a Home Rule Municipality in the State of Colorado, spanning Arapahoe and Adams counties, with the extreme southeastern portion of the city extending into Douglas County. Aurora is one of the principal cities of the Denver-Aurora-Broomfield, CO Metropolitan Statistical Area. Wikipedia