Finding the Third Proportional to 12,407 and 17,902

Step by Step Solution

1. Step 1: Write the proportion equation
   12,407 : 17,902 = 17,902 : x
2. Step 2: Convert to fraction form
   12,407/17,902 = 17,902/x
3. Step 3: Cross multiply
   12,407x = 17,902 × 17,902
4. Step 4: Simplify right side
   12,407x = 320,481,604
5. Step 5: Solve for x
   x = 320,481,604/12,407
6. Step 6: Final answer
   x = 25,830.71