Finding the Third Proportional to 11,185.59 and 15,679.83

Step by Step Solution

1. Step 1: Write the proportion equation
   11,185.59 : 15,679.83 = 15,679.83 : x
2. Step 2: Convert to fraction form
   11,185.59/15,679.83 = 15,679.83/x
3. Step 3: Cross multiply
   11,185.59x = 15,679.83 × 15,679.83
4. Step 4: Simplify right side
   11,185.59x = 245,857,010.03
5. Step 5: Solve for x
   x = 245,857,010.03/11,185.59
6. Step 6: Final answer
   x = 21,979.79