Finding the Third Proportional to 90,436.50 and 141,648.75

Step by Step Solution

1. Step 1: Write the proportion equation
   90,436.50 : 141,648.75 = 141,648.75 : x
2. Step 2: Convert to fraction form
   90,436.50/141,648.75 = 141,648.75/x
3. Step 3: Cross multiply
   90,436.50x = 141,648.75 × 141,648.75
4. Step 4: Simplify right side
   90,436.50x = 20,064,368,376.56
5. Step 5: Solve for x
   x = 20,064,368,376.56/90,436.50
6. Step 6: Final answer
   x = 221,861.40