Finding the Third Proportional to 8,408,637 and 12,985,591.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,408,637 : 12,985,591.50 = 12,985,591.50 : x
2. Step 2: Convert to fraction form
   8,408,637/12,985,591.50 = 12,985,591.50/x
3. Step 3: Cross multiply
   8,408,637x = 12,985,591.50 × 12,985,591.50
4. Step 4: Simplify right side
   8,408,637x = 168,625,586,604,872.25
5. Step 5: Solve for x
   x = 168,625,586,604,872.25/8,408,637
6. Step 6: Final answer
   x = 20,053,854.94