Finding the Third Proportional to 33,618.50 and 72,423.50

Step by Step Solution

1. Step 1: Write the proportion equation
   33,618.50 : 72,423.50 = 72,423.50 : x
2. Step 2: Convert to fraction form
   33,618.50/72,423.50 = 72,423.50/x
3. Step 3: Cross multiply
   33,618.50x = 72,423.50 × 72,423.50
4. Step 4: Simplify right side
   33,618.50x = 5,245,163,352.25
5. Step 5: Solve for x
   x = 5,245,163,352.25/33,618.50
6. Step 6: Final answer
   x = 156,020.15