Finding the Third Proportional to 3,390 and 4,499.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,390 : 4,499.50 = 4,499.50 : x
2. Step 2: Convert to fraction form
   3,390/4,499.50 = 4,499.50/x
3. Step 3: Cross multiply
   3,390x = 4,499.50 × 4,499.50
4. Step 4: Simplify right side
   3,390x = 20,245,500.25
5. Step 5: Solve for x
   x = 20,245,500.25/3,390
6. Step 6: Final answer
   x = 5,972.12