Finding the Third Proportional to 10,231.31 and 12,099.38

Step by Step Solution

1. Step 1: Write the proportion equation
   10,231.31 : 12,099.38 = 12,099.38 : x
2. Step 2: Convert to fraction form
   10,231.31/12,099.38 = 12,099.38/x
3. Step 3: Cross multiply
   10,231.31x = 12,099.38 × 12,099.38
4. Step 4: Simplify right side
   10,231.31x = 146,394,875.39
5. Step 5: Solve for x
   x = 146,394,875.39/10,231.31
6. Step 6: Final answer
   x = 14,308.51