Finding the Third Proportional to 4,577,620 and 9,941,792

Step by Step Solution

1. Step 1: Write the proportion equation
   4,577,620 : 9,941,792 = 9,941,792 : x
2. Step 2: Convert to fraction form
   4,577,620/9,941,792 = 9,941,792/x
3. Step 3: Cross multiply
   4,577,620x = 9,941,792 × 9,941,792
4. Step 4: Simplify right side
   4,577,620x = 98,839,228,171,264
5. Step 5: Solve for x
   x = 98,839,228,171,264/4,577,620
6. Step 6: Final answer
   x = 21,591,837.72