Maine is about 1.9 times bigger than Netherlands.

Netherlands is approximately 41,543 sq km, while Maine is approximately 79,931 sq km, making Maine 92% larger than Netherlands. Meanwhile, the population of Netherlands is ~17.4 million people (16.1 million fewer people live in Maine).
Tip: This to-scale comparison of Netherlands vs. Maine uses the Mercator projection, which distorts the size of regions near the poles.