Finding the Third Proportional to 10,636 and 16,402

Step by Step Solution

1. Step 1: Write the proportion equation
   10,636 : 16,402 = 16,402 : x
2. Step 2: Convert to fraction form
   10,636/16,402 = 16,402/x
3. Step 3: Cross multiply
   10,636x = 16,402 × 16,402
4. Step 4: Simplify right side
   10,636x = 269,025,604
5. Step 5: Solve for x
   x = 269,025,604/10,636
6. Step 6: Final answer
   x = 25,293.87