Finding the Third Proportional to 10,640 and 16,839.88

Step by Step Solution

1. Step 1: Write the proportion equation
   10,640 : 16,839.88 = 16,839.88 : x
2. Step 2: Convert to fraction form
   10,640/16,839.88 = 16,839.88/x
3. Step 3: Cross multiply
   10,640x = 16,839.88 × 16,839.88
4. Step 4: Simplify right side
   10,640x = 283,581,390.02
5. Step 5: Solve for x
   x = 283,581,390.02/10,640
6. Step 6: Final answer
   x = 26,652.39