Finding the Third Proportional to 13,676 and 21,426

Step by Step Solution

1. Step 1: Write the proportion equation
   13,676 : 21,426 = 21,426 : x
2. Step 2: Convert to fraction form
   13,676/21,426 = 21,426/x
3. Step 3: Cross multiply
   13,676x = 21,426 × 21,426
4. Step 4: Simplify right side
   13,676x = 459,073,476
5. Step 5: Solve for x
   x = 459,073,476/13,676
6. Step 6: Final answer
   x = 33,567.82