Finding the Third Proportional to 12,243 and 25,638

Step by Step Solution

1. Step 1: Write the proportion equation
   12,243 : 25,638 = 25,638 : x
2. Step 2: Convert to fraction form
   12,243/25,638 = 25,638/x
3. Step 3: Cross multiply
   12,243x = 25,638 × 25,638
4. Step 4: Simplify right side
   12,243x = 657,307,044
5. Step 5: Solve for x
   x = 657,307,044/12,243
6. Step 6: Final answer
   x = 53,688.40