Finding the Third Proportional to 11,728.55 and 18,164.25

Step by Step Solution

1. Step 1: Write the proportion equation
   11,728.55 : 18,164.25 = 18,164.25 : x
2. Step 2: Convert to fraction form
   11,728.55/18,164.25 = 18,164.25/x
3. Step 3: Cross multiply
   11,728.55x = 18,164.25 × 18,164.25
4. Step 4: Simplify right side
   11,728.55x = 329,939,978.06
5. Step 5: Solve for x
   x = 329,939,978.06/11,728.55
6. Step 6: Final answer
   x = 28,131.36