Finding the Third Proportional to 55,046,154 and 87,450,978

Step by Step Solution

1. Step 1: Write the proportion equation
   55,046,154 : 87,450,978 = 87,450,978 : x
2. Step 2: Convert to fraction form
   55,046,154/87,450,978 = 87,450,978/x
3. Step 3: Cross multiply
   55,046,154x = 87,450,978 × 87,450,978
4. Step 4: Simplify right side
   55,046,154x = 7,647,673,553,156,484
5. Step 5: Solve for x
   x = 7,647,673,553,156,484/55,046,154
6. Step 6: Final answer
   x = 138,932,023.36