Finding the Third Proportional to 43,139,439 and 60,678,502.50

Step by Step Solution

1. Step 1: Write the proportion equation
   43,139,439 : 60,678,502.50 = 60,678,502.50 : x
2. Step 2: Convert to fraction form
   43,139,439/60,678,502.50 = 60,678,502.50/x
3. Step 3: Cross multiply
   43,139,439x = 60,678,502.50 × 60,678,502.50
4. Step 4: Simplify right side
   43,139,439x = 3,681,880,665,642,506
5. Step 5: Solve for x
   x = 3,681,880,665,642,506/43,139,439
6. Step 6: Final answer
   x = 85,348,366.85