Finding the Third Proportional to 12,489.19 and 22,411.69

Step by Step Solution

1. Step 1: Write the proportion equation
   12,489.19 : 22,411.69 = 22,411.69 : x
2. Step 2: Convert to fraction form
   12,489.19/22,411.69 = 22,411.69/x
3. Step 3: Cross multiply
   12,489.19x = 22,411.69 × 22,411.69
4. Step 4: Simplify right side
   12,489.19x = 502,283,736.60
5. Step 5: Solve for x
   x = 502,283,736.60/12,489.19
6. Step 6: Final answer
   x = 40,217.49