4.09 * 10^-19= or 2.88 * 10^-19= larger
4.09×10−19≥2.88×10−19 both sides×1019
4.09 > 2.88
0.000000000000000000409>0.000000000000000000288
4.09 * 10^-19
2.88 * 10^-19
Divide them both by 10^-19, which is a positive number and they become
4.09 and 2.88
4.09 is bigger than 2.88 so
the first one is the biggest :)