Papua New Guinea is about 227 times bigger than Mauritius.

Mauritius is approximately 2,040 sq km, while Papua New Guinea is approximately 462,840 sq km, making Papua New Guinea 22,588% larger than Mauritius. Meanwhile, the population of Mauritius is ~1.3 million people (8.3 million more people live in Papua New Guinea).
Tip: This to-scale comparison of Mauritius vs. Papua New Guinea uses the Mercator projection, which distorts the size of regions near the poles.