Finding the Third Proportional to 10,918.50 and 16,818.75

Step by Step Solution

1. Step 1: Write the proportion equation
   10,918.50 : 16,818.75 = 16,818.75 : x
2. Step 2: Convert to fraction form
   10,918.50/16,818.75 = 16,818.75/x
3. Step 3: Cross multiply
   10,918.50x = 16,818.75 × 16,818.75
4. Step 4: Simplify right side
   10,918.50x = 282,870,351.56
5. Step 5: Solve for x
   x = 282,870,351.56/10,918.50
6. Step 6: Final answer
   x = 25,907.44