Finding the Third Proportional to 60,415,389 and 89,490,571.50

Step by Step Solution

1. Step 1: Write the proportion equation
   60,415,389 : 89,490,571.50 = 89,490,571.50 : x
2. Step 2: Convert to fraction form
   60,415,389/89,490,571.50 = 89,490,571.50/x
3. Step 3: Cross multiply
   60,415,389x = 89,490,571.50 × 89,490,571.50
4. Step 4: Simplify right side
   60,415,389x = 8,008,562,387,396,612
5. Step 5: Solve for x
   x = 8,008,562,387,396,612/60,415,389
6. Step 6: Final answer
   x = 132,558,318.67