Finding the Third Proportional to 2,628.56 and 3,919.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,628.56 : 3,919.78 = 3,919.78 : x
2. Step 2: Convert to fraction form
   2,628.56/3,919.78 = 3,919.78/x
3. Step 3: Cross multiply
   2,628.56x = 3,919.78 × 3,919.78
4. Step 4: Simplify right side
   2,628.56x = 15,364,685.05
5. Step 5: Solve for x
   x = 15,364,685.05/2,628.56
6. Step 6: Final answer
   x = 5,845.28