Finding the Third Proportional to 90,831 and 141,763.50

Step by Step Solution

1. Step 1: Write the proportion equation
   90,831 : 141,763.50 = 141,763.50 : x
2. Step 2: Convert to fraction form
   90,831/141,763.50 = 141,763.50/x
3. Step 3: Cross multiply
   90,831x = 141,763.50 × 141,763.50
4. Step 4: Simplify right side
   90,831x = 20,096,889,932.25
5. Step 5: Solve for x
   x = 20,096,889,932.25/90,831
6. Step 6: Final answer
   x = 221,255.85