Finding the Third Proportional to 8,416,649 and 12,309,961.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,416,649 : 12,309,961.50 = 12,309,961.50 : x
2. Step 2: Convert to fraction form
   8,416,649/12,309,961.50 = 12,309,961.50/x
3. Step 3: Cross multiply
   8,416,649x = 12,309,961.50 × 12,309,961.50
4. Step 4: Simplify right side
   8,416,649x = 151,535,152,131,482.25
5. Step 5: Solve for x
   x = 151,535,152,131,482.25/8,416,649
6. Step 6: Final answer
   x = 18,004,214.28