Finding the Third Proportional to 2,729.67 and 4,120.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,729.67 : 4,120.45 = 4,120.45 : x
2. Step 2: Convert to fraction form
   2,729.67/4,120.45 = 4,120.45/x
3. Step 3: Cross multiply
   2,729.67x = 4,120.45 × 4,120.45
4. Step 4: Simplify right side
   2,729.67x = 16,978,133.96
5. Step 5: Solve for x
   x = 16,978,133.96/2,729.67
6. Step 6: Final answer
   x = 6,219.84