Finding the Third Proportional to 13,658.44 and 20,613.28

Step by Step Solution

1. Step 1: Write the proportion equation
   13,658.44 : 20,613.28 = 20,613.28 : x
2. Step 2: Convert to fraction form
   13,658.44/20,613.28 = 20,613.28/x
3. Step 3: Cross multiply
   13,658.44x = 20,613.28 × 20,613.28
4. Step 4: Simplify right side
   13,658.44x = 424,907,363.89
5. Step 5: Solve for x
   x = 424,907,363.89/13,658.44
6. Step 6: Final answer
   x = 31,109.51