Finding the Third Proportional to 10,920.75 and 16,699.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,920.75 : 16,699.50 = 16,699.50 : x
2. Step 2: Convert to fraction form
   10,920.75/16,699.50 = 16,699.50/x
3. Step 3: Cross multiply
   10,920.75x = 16,699.50 × 16,699.50
4. Step 4: Simplify right side
   10,920.75x = 278,873,300.25
5. Step 5: Solve for x
   x = 278,873,300.25/10,920.75
6. Step 6: Final answer
   x = 25,536.09