Finding the Third Proportional to 11,988 and 17,910

Step by Step Solution

1. Step 1: Write the proportion equation
   11,988 : 17,910 = 17,910 : x
2. Step 2: Convert to fraction form
   11,988/17,910 = 17,910/x
3. Step 3: Cross multiply
   11,988x = 17,910 × 17,910
4. Step 4: Simplify right side
   11,988x = 320,768,100
5. Step 5: Solve for x
   x = 320,768,100/11,988
6. Step 6: Final answer
   x = 26,757.43