Finding the Third Proportional to 90,078.75 and 141,304.50

Step by Step Solution

1. Step 1: Write the proportion equation
   90,078.75 : 141,304.50 = 141,304.50 : x
2. Step 2: Convert to fraction form
   90,078.75/141,304.50 = 141,304.50/x
3. Step 3: Cross multiply
   90,078.75x = 141,304.50 × 141,304.50
4. Step 4: Simplify right side
   90,078.75x = 19,966,961,720.25
5. Step 5: Solve for x
   x = 19,966,961,720.25/90,078.75
6. Step 6: Final answer
   x = 221,661.18