Finding the Third Proportional to 51,664,807,908 and 71,835,785,727.75

Step by Step Solution

1. Step 1: Write the proportion equation
   51,664,807,908 : 71,835,785,727.75 = 71,835,785,727.75 : x
2. Step 2: Convert to fraction form
   51,664,807,908/71,835,785,727.75 = 71,835,785,727.75/x
3. Step 3: Cross multiply
   51,664,807,908x = 71,835,785,727.75 × 71,835,785,727.75
4. Step 4: Simplify right side
   51,664,807,908x = 5,160,380,111,123,210,305,536
5. Step 5: Solve for x
   x = 5,160,380,111,123,210,305,536/51,664,807,908
6. Step 6: Final answer
   x = 99,881,918,080.72