Finding the Third Proportional to 2,919.80 and 3,924.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,919.80 : 3,924.07 = 3,924.07 : x
2. Step 2: Convert to fraction form
   2,919.80/3,924.07 = 3,924.07/x
3. Step 3: Cross multiply
   2,919.80x = 3,924.07 × 3,924.07
4. Step 4: Simplify right side
   2,919.80x = 15,398,327.82
5. Step 5: Solve for x
   x = 15,398,327.82/2,919.80
6. Step 6: Final answer
   x = 5,273.77