Finding the Third Proportional to 90,612 and 130,518

Step by Step Solution

1. Step 1: Write the proportion equation
   90,612 : 130,518 = 130,518 : x
2. Step 2: Convert to fraction form
   90,612/130,518 = 130,518/x
3. Step 3: Cross multiply
   90,612x = 130,518 × 130,518
4. Step 4: Simplify right side
   90,612x = 17,034,948,324
5. Step 5: Solve for x
   x = 17,034,948,324/90,612
6. Step 6: Final answer
   x = 187,998.81