Finding the Third Proportional to 2,805.75 and 4,243.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,805.75 : 4,243.50 = 4,243.50 : x
2. Step 2: Convert to fraction form
   2,805.75/4,243.50 = 4,243.50/x
3. Step 3: Cross multiply
   2,805.75x = 4,243.50 × 4,243.50
4. Step 4: Simplify right side
   2,805.75x = 18,007,292.25
5. Step 5: Solve for x
   x = 18,007,292.25/2,805.75
6. Step 6: Final answer
   x = 6,418.00