Finding the Third Proportional to 17,879.50 and 38,872

Step by Step Solution

1. Step 1: Write the proportion equation
   17,879.50 : 38,872 = 38,872 : x
2. Step 2: Convert to fraction form
   17,879.50/38,872 = 38,872/x
3. Step 3: Cross multiply
   17,879.50x = 38,872 × 38,872
4. Step 4: Simplify right side
   17,879.50x = 1,511,032,384
5. Step 5: Solve for x
   x = 1,511,032,384/17,879.50
6. Step 6: Final answer
   x = 84,512.00