Finding the Third Proportional to 2,778 and 3,174

Step by Step Solution

1. Step 1: Write the proportion equation
   2,778 : 3,174 = 3,174 : x
2. Step 2: Convert to fraction form
   2,778/3,174 = 3,174/x
3. Step 3: Cross multiply
   2,778x = 3,174 × 3,174
4. Step 4: Simplify right side
   2,778x = 10,074,276
5. Step 5: Solve for x
   x = 10,074,276/2,778
6. Step 6: Final answer
   x = 3,626.45