Finding the Third Proportional to 131,668.50 and 291,808.50

Step by Step Solution

1. Step 1: Write the proportion equation
   131,668.50 : 291,808.50 = 291,808.50 : x
2. Step 2: Convert to fraction form
   131,668.50/291,808.50 = 291,808.50/x
3. Step 3: Cross multiply
   131,668.50x = 291,808.50 × 291,808.50
4. Step 4: Simplify right side
   131,668.50x = 85,152,200,672.25
5. Step 5: Solve for x
   x = 85,152,200,672.25/131,668.50
6. Step 6: Final answer
   x = 646,716.57