Finding the Third Proportional to 51,820,438.50 and 77,445,057.50

Step by Step Solution

1. Step 1: Write the proportion equation
   51,820,438.50 : 77,445,057.50 = 77,445,057.50 : x
2. Step 2: Convert to fraction form
   51,820,438.50/77,445,057.50 = 77,445,057.50/x
3. Step 3: Cross multiply
   51,820,438.50x = 77,445,057.50 × 77,445,057.50
4. Step 4: Simplify right side
   51,820,438.50x = 5,997,736,931,178,306
5. Step 5: Solve for x
   x = 5,997,736,931,178,306/51,820,438.50
6. Step 6: Final answer
   x = 115,740,759.92