Finding the Third Proportional to 12,402 and 25,812

Step by Step Solution

1. Step 1: Write the proportion equation
   12,402 : 25,812 = 25,812 : x
2. Step 2: Convert to fraction form
   12,402/25,812 = 25,812/x
3. Step 3: Cross multiply
   12,402x = 25,812 × 25,812
4. Step 4: Simplify right side
   12,402x = 666,259,344
5. Step 5: Solve for x
   x = 666,259,344/12,402
6. Step 6: Final answer
   x = 53,721.93