Finding the Third Proportional to 8,554 and 10,426

Step by Step Solution

1. Step 1: Write the proportion equation
   8,554 : 10,426 = 10,426 : x
2. Step 2: Convert to fraction form
   8,554/10,426 = 10,426/x
3. Step 3: Cross multiply
   8,554x = 10,426 × 10,426
4. Step 4: Simplify right side
   8,554x = 108,701,476
5. Step 5: Solve for x
   x = 108,701,476/8,554
6. Step 6: Final answer
   x = 12,707.68