Finding the Third Proportional to 59,128 and 131,380

Step by Step Solution

1. Step 1: Write the proportion equation
   59,128 : 131,380 = 131,380 : x
2. Step 2: Convert to fraction form
   59,128/131,380 = 131,380/x
3. Step 3: Cross multiply
   59,128x = 131,380 × 131,380
4. Step 4: Simplify right side
   59,128x = 17,260,704,400
5. Step 5: Solve for x
   x = 17,260,704,400/59,128
6. Step 6: Final answer
   x = 291,920.99