Finding the Third Proportional to 40,515.75 and 84,280.50

Step by Step Solution

1. Step 1: Write the proportion equation
   40,515.75 : 84,280.50 = 84,280.50 : x
2. Step 2: Convert to fraction form
   40,515.75/84,280.50 = 84,280.50/x
3. Step 3: Cross multiply
   40,515.75x = 84,280.50 × 84,280.50
4. Step 4: Simplify right side
   40,515.75x = 7,103,202,680.25
5. Step 5: Solve for x
   x = 7,103,202,680.25/40,515.75
6. Step 6: Final answer
   x = 175,319.54