Finding the Third Proportional to 2,078.79 and 4,490.75

Step by Step Solution

1. Step 1: Write the proportion equation
   2,078.79 : 4,490.75 = 4,490.75 : x
2. Step 2: Convert to fraction form
   2,078.79/4,490.75 = 4,490.75/x
3. Step 3: Cross multiply
   2,078.79x = 4,490.75 × 4,490.75
4. Step 4: Simplify right side
   2,078.79x = 20,166,870.65
5. Step 5: Solve for x
   x = 20,166,870.65/2,078.79
6. Step 6: Final answer
   x = 9,701.26