Finding the Third Proportional to 16,500 and 21,879.75

Step by Step Solution

1. Step 1: Write the proportion equation
   16,500 : 21,879.75 = 21,879.75 : x
2. Step 2: Convert to fraction form
   16,500/21,879.75 = 21,879.75/x
3. Step 3: Cross multiply
   16,500x = 21,879.75 × 21,879.75
4. Step 4: Simplify right side
   16,500x = 478,723,460.06
5. Step 5: Solve for x
   x = 478,723,460.06/16,500
6. Step 6: Final answer
   x = 29,013.54