Finding the Third Proportional to 10,813.50 and 18,042.75

Step by Step Solution

1. Step 1: Write the proportion equation
   10,813.50 : 18,042.75 = 18,042.75 : x
2. Step 2: Convert to fraction form
   10,813.50/18,042.75 = 18,042.75/x
3. Step 3: Cross multiply
   10,813.50x = 18,042.75 × 18,042.75
4. Step 4: Simplify right side
   10,813.50x = 325,540,827.56
5. Step 5: Solve for x
   x = 325,540,827.56/10,813.50
6. Step 6: Final answer
   x = 30,105.04