Finding the Third Proportional to 4,431,582 and 9,639,624

Step by Step Solution

1. Step 1: Write the proportion equation
   4,431,582 : 9,639,624 = 9,639,624 : x
2. Step 2: Convert to fraction form
   4,431,582/9,639,624 = 9,639,624/x
3. Step 3: Cross multiply
   4,431,582x = 9,639,624 × 9,639,624
4. Step 4: Simplify right side
   4,431,582x = 92,922,350,861,376
5. Step 5: Solve for x
   x = 92,922,350,861,376/4,431,582
6. Step 6: Final answer
   x = 20,968,212.00