Finding the Third Proportional to 12,486 and 21,948

Step by Step Solution

1. Step 1: Write the proportion equation
   12,486 : 21,948 = 21,948 : x
2. Step 2: Convert to fraction form
   12,486/21,948 = 21,948/x
3. Step 3: Cross multiply
   12,486x = 21,948 × 21,948
4. Step 4: Simplify right side
   12,486x = 481,714,704
5. Step 5: Solve for x
   x = 481,714,704/12,486
6. Step 6: Final answer
   x = 38,580.39