Finding the Third Proportional to 6,402 and 10,021

Step by Step Solution

1. Step 1: Write the proportion equation
   6,402 : 10,021 = 10,021 : x
2. Step 2: Convert to fraction form
   6,402/10,021 = 10,021/x
3. Step 3: Cross multiply
   6,402x = 10,021 × 10,021
4. Step 4: Simplify right side
   6,402x = 100,420,441
5. Step 5: Solve for x
   x = 100,420,441/6,402
6. Step 6: Final answer
   x = 15,685.79