Finding the Third Proportional to 42,306.75 and 90,445.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,306.75 : 90,445.50 = 90,445.50 : x
2. Step 2: Convert to fraction form
   42,306.75/90,445.50 = 90,445.50/x
3. Step 3: Cross multiply
   42,306.75x = 90,445.50 × 90,445.50
4. Step 4: Simplify right side
   42,306.75x = 8,180,388,470.25
5. Step 5: Solve for x
   x = 8,180,388,470.25/42,306.75
6. Step 6: Final answer
   x = 193,358.94