Finding the Third Proportional to 3,405 and 7,499

Step by Step Solution

1. Step 1: Write the proportion equation
   3,405 : 7,499 = 7,499 : x
2. Step 2: Convert to fraction form
   3,405/7,499 = 7,499/x
3. Step 3: Cross multiply
   3,405x = 7,499 × 7,499
4. Step 4: Simplify right side
   3,405x = 56,235,001
5. Step 5: Solve for x
   x = 56,235,001/3,405
6. Step 6: Final answer
   x = 16,515.42