Finding the Third Proportional to 90,151.50 and 140,142

Step by Step Solution

1. Step 1: Write the proportion equation
   90,151.50 : 140,142 = 140,142 : x
2. Step 2: Convert to fraction form
   90,151.50/140,142 = 140,142/x
3. Step 3: Cross multiply
   90,151.50x = 140,142 × 140,142
4. Step 4: Simplify right side
   90,151.50x = 19,639,780,164
5. Step 5: Solve for x
   x = 19,639,780,164/90,151.50
6. Step 6: Final answer
   x = 217,853.06