Finding the Third Proportional to 10,228.78 and 15,616.55

Step by Step Solution

1. Step 1: Write the proportion equation
   10,228.78 : 15,616.55 = 15,616.55 : x
2. Step 2: Convert to fraction form
   10,228.78/15,616.55 = 15,616.55/x
3. Step 3: Cross multiply
   10,228.78x = 15,616.55 × 15,616.55
4. Step 4: Simplify right side
   10,228.78x = 243,876,536.30
5. Step 5: Solve for x
   x = 243,876,536.30/10,228.78
6. Step 6: Final answer
   x = 23,842.19