Finding the Third Proportional to 90,769.50 and 142,231.50

Step by Step Solution

1. Step 1: Write the proportion equation
   90,769.50 : 142,231.50 = 142,231.50 : x
2. Step 2: Convert to fraction form
   90,769.50/142,231.50 = 142,231.50/x
3. Step 3: Cross multiply
   90,769.50x = 142,231.50 × 142,231.50
4. Step 4: Simplify right side
   90,769.50x = 20,229,799,592.25
5. Step 5: Solve for x
   x = 20,229,799,592.25/90,769.50
6. Step 6: Final answer
   x = 222,870.01