Finding the Third Proportional to 169,665,039 and 259,428,028

Step by Step Solution

1. Step 1: Write the proportion equation
   169,665,039 : 259,428,028 = 259,428,028 : x
2. Step 2: Convert to fraction form
   169,665,039/259,428,028 = 259,428,028/x
3. Step 3: Cross multiply
   169,665,039x = 259,428,028 × 259,428,028
4. Step 4: Simplify right side
   169,665,039x = 67,302,901,711,968,784
5. Step 5: Solve for x
   x = 67,302,901,711,968,784/169,665,039
6. Step 6: Final answer
   x = 396,681,025.79