Finding the Third Proportional to 131,588 and 318,180

Step by Step Solution

1. Step 1: Write the proportion equation
   131,588 : 318,180 = 318,180 : x
2. Step 2: Convert to fraction form
   131,588/318,180 = 318,180/x
3. Step 3: Cross multiply
   131,588x = 318,180 × 318,180
4. Step 4: Simplify right side
   131,588x = 101,238,512,400
5. Step 5: Solve for x
   x = 101,238,512,400/131,588
6. Step 6: Final answer
   x = 769,359.76