Finding the Third Proportional to 131,488.50 and 284,004.50

Step by Step Solution

1. Step 1: Write the proportion equation
   131,488.50 : 284,004.50 = 284,004.50 : x
2. Step 2: Convert to fraction form
   131,488.50/284,004.50 = 284,004.50/x
3. Step 3: Cross multiply
   131,488.50x = 284,004.50 × 284,004.50
4. Step 4: Simplify right side
   131,488.50x = 80,658,556,020.25
5. Step 5: Solve for x
   x = 80,658,556,020.25/131,488.50
6. Step 6: Final answer
   x = 613,426.70