Finding the Third Proportional to 11,720 and 16,488

Step by Step Solution

1. Step 1: Write the proportion equation
   11,720 : 16,488 = 16,488 : x
2. Step 2: Convert to fraction form
   11,720/16,488 = 16,488/x
3. Step 3: Cross multiply
   11,720x = 16,488 × 16,488
4. Step 4: Simplify right side
   11,720x = 271,854,144
5. Step 5: Solve for x
   x = 271,854,144/11,720
6. Step 6: Final answer
   x = 23,195.75