Finding the Third Proportional to 12,405 and 17,901

Step by Step Solution

1. Step 1: Write the proportion equation
   12,405 : 17,901 = 17,901 : x
2. Step 2: Convert to fraction form
   12,405/17,901 = 17,901/x
3. Step 3: Cross multiply
   12,405x = 17,901 × 17,901
4. Step 4: Simplify right side
   12,405x = 320,445,801
5. Step 5: Solve for x
   x = 320,445,801/12,405
6. Step 6: Final answer
   x = 25,831.99