Finding the Third Proportional to 7,679.25 and 12,225.38

Step by Step Solution

1. Step 1: Write the proportion equation
   7,679.25 : 12,225.38 = 12,225.38 : x
2. Step 2: Convert to fraction form
   7,679.25/12,225.38 = 12,225.38/x
3. Step 3: Cross multiply
   7,679.25x = 12,225.38 × 12,225.38
4. Step 4: Simplify right side
   7,679.25x = 149,459,793.89
5. Step 5: Solve for x
   x = 149,459,793.89/7,679.25
6. Step 6: Final answer
   x = 19,462.81