Finding the Third Proportional to 90,141.50 and 130,561

Step by Step Solution

1. Step 1: Write the proportion equation
   90,141.50 : 130,561 = 130,561 : x
2. Step 2: Convert to fraction form
   90,141.50/130,561 = 130,561/x
3. Step 3: Cross multiply
   90,141.50x = 130,561 × 130,561
4. Step 4: Simplify right side
   90,141.50x = 17,046,174,721
5. Step 5: Solve for x
   x = 17,046,174,721/90,141.50
6. Step 6: Final answer
   x = 189,104.63