Finding the Third Proportional to 90,720.38 and 141,048.56

Step by Step Solution

1. Step 1: Write the proportion equation
   90,720.38 : 141,048.56 = 141,048.56 : x
2. Step 2: Convert to fraction form
   90,720.38/141,048.56 = 141,048.56/x
3. Step 3: Cross multiply
   90,720.38x = 141,048.56 × 141,048.56
4. Step 4: Simplify right side
   90,720.38x = 19,894,696,983.32
5. Step 5: Solve for x
   x = 19,894,696,983.32/90,720.38
6. Step 6: Final answer
   x = 219,296.90