Finding the Third Proportional to 8,396 and 10,642

Step by Step Solution

1. Step 1: Write the proportion equation
   8,396 : 10,642 = 10,642 : x
2. Step 2: Convert to fraction form
   8,396/10,642 = 10,642/x
3. Step 3: Cross multiply
   8,396x = 10,642 × 10,642
4. Step 4: Simplify right side
   8,396x = 113,252,164
5. Step 5: Solve for x
   x = 113,252,164/8,396
6. Step 6: Final answer
   x = 13,488.82