Finding the Third Proportional to 8,461,524 and 12,890,680

Step by Step Solution

1. Step 1: Write the proportion equation
   8,461,524 : 12,890,680 = 12,890,680 : x
2. Step 2: Convert to fraction form
   8,461,524/12,890,680 = 12,890,680/x
3. Step 3: Cross multiply
   8,461,524x = 12,890,680 × 12,890,680
4. Step 4: Simplify right side
   8,461,524x = 166,169,630,862,400
5. Step 5: Solve for x
   x = 166,169,630,862,400/8,461,524
6. Step 6: Final answer
   x = 19,638,262.67