Finding the Third Proportional to 8,458,384 and 12,650,624

Step by Step Solution

1. Step 1: Write the proportion equation
   8,458,384 : 12,650,624 = 12,650,624 : x
2. Step 2: Convert to fraction form
   8,458,384/12,650,624 = 12,650,624/x
3. Step 3: Cross multiply
   8,458,384x = 12,650,624 × 12,650,624
4. Step 4: Simplify right side
   8,458,384x = 160,038,287,589,376
5. Step 5: Solve for x
   x = 160,038,287,589,376/8,458,384
6. Step 6: Final answer
   x = 18,920,669.43