Finding the Third Proportional to 90,708 and 143,020.50

Step by Step Solution

1. Step 1: Write the proportion equation
   90,708 : 143,020.50 = 143,020.50 : x
2. Step 2: Convert to fraction form
   90,708/143,020.50 = 143,020.50/x
3. Step 3: Cross multiply
   90,708x = 143,020.50 × 143,020.50
4. Step 4: Simplify right side
   90,708x = 20,454,863,420.25
5. Step 5: Solve for x
   x = 20,454,863,420.25/90,708
6. Step 6: Final answer
   x = 225,502.31