Finding the Third Proportional to 3,078 and 3,618

Step by Step Solution

1. Step 1: Write the proportion equation
   3,078 : 3,618 = 3,618 : x
2. Step 2: Convert to fraction form
   3,078/3,618 = 3,618/x
3. Step 3: Cross multiply
   3,078x = 3,618 × 3,618
4. Step 4: Simplify right side
   3,078x = 13,089,924
5. Step 5: Solve for x
   x = 13,089,924/3,078
6. Step 6: Final answer
   x = 4,252.74