Finding the Third Proportional to 90,141.75 and 130,561.88

Step by Step Solution

1. Step 1: Write the proportion equation
   90,141.75 : 130,561.88 = 130,561.88 : x
2. Step 2: Convert to fraction form
   90,141.75/130,561.88 = 130,561.88/x
3. Step 3: Cross multiply
   90,141.75x = 130,561.88 × 130,561.88
4. Step 4: Simplify right side
   90,141.75x = 17,046,403,203.52
5. Step 5: Solve for x
   x = 17,046,403,203.52/90,141.75
6. Step 6: Final answer
   x = 189,106.64