Finding the Third Proportional to 90,528 and 131,688

Step by Step Solution

1. Step 1: Write the proportion equation
   90,528 : 131,688 = 131,688 : x
2. Step 2: Convert to fraction form
   90,528/131,688 = 131,688/x
3. Step 3: Cross multiply
   90,528x = 131,688 × 131,688
4. Step 4: Simplify right side
   90,528x = 17,341,729,344
5. Step 5: Solve for x
   x = 17,341,729,344/90,528
6. Step 6: Final answer
   x = 191,562.05