Finding the Third Proportional to 131,016 and 307,978.50

Step by Step Solution

1. Step 1: Write the proportion equation
   131,016 : 307,978.50 = 307,978.50 : x
2. Step 2: Convert to fraction form
   131,016/307,978.50 = 307,978.50/x
3. Step 3: Cross multiply
   131,016x = 307,978.50 × 307,978.50
4. Step 4: Simplify right side
   131,016x = 94,850,756,462.25
5. Step 5: Solve for x
   x = 94,850,756,462.25/131,016
6. Step 6: Final answer
   x = 723,963.15