Finding the Third Proportional to 8,958 and 10,638

Step by Step Solution

1. Step 1: Write the proportion equation
   8,958 : 10,638 = 10,638 : x
2. Step 2: Convert to fraction form
   8,958/10,638 = 10,638/x
3. Step 3: Cross multiply
   8,958x = 10,638 × 10,638
4. Step 4: Simplify right side
   8,958x = 113,167,044
5. Step 5: Solve for x
   x = 113,167,044/8,958
6. Step 6: Final answer
   x = 12,633.07