Finding the Third Proportional to 19,449.88 and 39,613.57

Step by Step Solution

1. Step 1: Write the proportion equation
   19,449.88 : 39,613.57 = 39,613.57 : x
2. Step 2: Convert to fraction form
   19,449.88/39,613.57 = 39,613.57/x
3. Step 3: Cross multiply
   19,449.88x = 39,613.57 × 39,613.57
4. Step 4: Simplify right side
   19,449.88x = 1,569,234,952.90
5. Step 5: Solve for x
   x = 1,569,234,952.90/19,449.88
6. Step 6: Final answer
   x = 80,680.96