Finding the Third Proportional to 11,640 and 18,040.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,640 : 18,040.50 = 18,040.50 : x
2. Step 2: Convert to fraction form
   11,640/18,040.50 = 18,040.50/x
3. Step 3: Cross multiply
   11,640x = 18,040.50 × 18,040.50
4. Step 4: Simplify right side
   11,640x = 325,459,640.25
5. Step 5: Solve for x
   x = 325,459,640.25/11,640
6. Step 6: Final answer
   x = 27,960.45