Finding the Third Proportional to 11,727.56 and 18,191.25

Step by Step Solution

1. Step 1: Write the proportion equation
   11,727.56 : 18,191.25 = 18,191.25 : x
2. Step 2: Convert to fraction form
   11,727.56/18,191.25 = 18,191.25/x
3. Step 3: Cross multiply
   11,727.56x = 18,191.25 × 18,191.25
4. Step 4: Simplify right side
   11,727.56x = 330,921,576.56
5. Step 5: Solve for x
   x = 330,921,576.56/11,727.56
6. Step 6: Final answer
   x = 28,217.42