Finding the Third Proportional to 3,800.67 and 4,288.57

Step by Step Solution

1. Step 1: Write the proportion equation
   3,800.67 : 4,288.57 = 4,288.57 : x
2. Step 2: Convert to fraction form
   3,800.67/4,288.57 = 4,288.57/x
3. Step 3: Cross multiply
   3,800.67x = 4,288.57 × 4,288.57
4. Step 4: Simplify right side
   3,800.67x = 18,391,835.33
5. Step 5: Solve for x
   x = 18,391,835.33/3,800.67
6. Step 6: Final answer
   x = 4,839.10