Finding the Third Proportional to 63,949.50 and 140,359.50

Step by Step Solution

1. Step 1: Write the proportion equation
   63,949.50 : 140,359.50 = 140,359.50 : x
2. Step 2: Convert to fraction form
   63,949.50/140,359.50 = 140,359.50/x
3. Step 3: Cross multiply
   63,949.50x = 140,359.50 × 140,359.50
4. Step 4: Simplify right side
   63,949.50x = 19,700,789,240.25
5. Step 5: Solve for x
   x = 19,700,789,240.25/63,949.50
6. Step 6: Final answer
   x = 308,067.92