Finding the Third Proportional to 7,658.25 and 12,216.38

Step by Step Solution

1. Step 1: Write the proportion equation
   7,658.25 : 12,216.38 = 12,216.38 : x
2. Step 2: Convert to fraction form
   7,658.25/12,216.38 = 12,216.38/x
3. Step 3: Cross multiply
   7,658.25x = 12,216.38 × 12,216.38
4. Step 4: Simplify right side
   7,658.25x = 149,239,818.14
5. Step 5: Solve for x
   x = 149,239,818.14/7,658.25
6. Step 6: Final answer
   x = 19,487.46