Finding the Third Proportional to 2,362.78 and 3,890.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,362.78 : 3,890.25 = 3,890.25 : x
2. Step 2: Convert to fraction form
   2,362.78/3,890.25 = 3,890.25/x
3. Step 3: Cross multiply
   2,362.78x = 3,890.25 × 3,890.25
4. Step 4: Simplify right side
   2,362.78x = 15,134,045.06
5. Step 5: Solve for x
   x = 15,134,045.06/2,362.78
6. Step 6: Final answer
   x = 6,405.18