Finding the Third Proportional to 11,326 and 18,718.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,326 : 18,718.50 = 18,718.50 : x
2. Step 2: Convert to fraction form
   11,326/18,718.50 = 18,718.50/x
3. Step 3: Cross multiply
   11,326x = 18,718.50 × 18,718.50
4. Step 4: Simplify right side
   11,326x = 350,382,242.25
5. Step 5: Solve for x
   x = 350,382,242.25/11,326
6. Step 6: Final answer
   x = 30,936.10