Finding the Third Proportional to 90,720 and 141,048

Step by Step Solution

1. Step 1: Write the proportion equation
   90,720 : 141,048 = 141,048 : x
2. Step 2: Convert to fraction form
   90,720/141,048 = 141,048/x
3. Step 3: Cross multiply
   90,720x = 141,048 × 141,048
4. Step 4: Simplify right side
   90,720x = 19,894,538,304
5. Step 5: Solve for x
   x = 19,894,538,304/90,720
6. Step 6: Final answer
   x = 219,296.06