Finding the Third Proportional to 11,998 and 17,872

Step by Step Solution

1. Step 1: Write the proportion equation
   11,998 : 17,872 = 17,872 : x
2. Step 2: Convert to fraction form
   11,998/17,872 = 17,872/x
3. Step 3: Cross multiply
   11,998x = 17,872 × 17,872
4. Step 4: Simplify right side
   11,998x = 319,408,384
5. Step 5: Solve for x
   x = 319,408,384/11,998
6. Step 6: Final answer
   x = 26,621.80