Finding the Third Proportional to 10,909 and 17,065.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,909 : 17,065.50 = 17,065.50 : x
2. Step 2: Convert to fraction form
   10,909/17,065.50 = 17,065.50/x
3. Step 3: Cross multiply
   10,909x = 17,065.50 × 17,065.50
4. Step 4: Simplify right side
   10,909x = 291,231,290.25
5. Step 5: Solve for x
   x = 291,231,290.25/10,909
6. Step 6: Final answer
   x = 26,696.42