Finding the Third Proportional to 3,019.78 and 4,619.74

Step by Step Solution

1. Step 1: Write the proportion equation
   3,019.78 : 4,619.74 = 4,619.74 : x
2. Step 2: Convert to fraction form
   3,019.78/4,619.74 = 4,619.74/x
3. Step 3: Cross multiply
   3,019.78x = 4,619.74 × 4,619.74
4. Step 4: Simplify right side
   3,019.78x = 21,342,017.88
5. Step 5: Solve for x
   x = 21,342,017.88/3,019.78
6. Step 6: Final answer
   x = 7,067.41