Finding the Third Proportional to 131,593.50 and 278,131.50

Step by Step Solution

1. Step 1: Write the proportion equation
   131,593.50 : 278,131.50 = 278,131.50 : x
2. Step 2: Convert to fraction form
   131,593.50/278,131.50 = 278,131.50/x
3. Step 3: Cross multiply
   131,593.50x = 278,131.50 × 278,131.50
4. Step 4: Simplify right side
   131,593.50x = 77,357,131,292.25
5. Step 5: Solve for x
   x = 77,357,131,292.25/131,593.50
6. Step 6: Final answer
   x = 587,849.18