Finding the Third Proportional to 3,119.50 and 3,389.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,119.50 : 3,389.50 = 3,389.50 : x
2. Step 2: Convert to fraction form
   3,119.50/3,389.50 = 3,389.50/x
3. Step 3: Cross multiply
   3,119.50x = 3,389.50 × 3,389.50
4. Step 4: Simplify right side
   3,119.50x = 11,488,710.25
5. Step 5: Solve for x
   x = 11,488,710.25/3,119.50
6. Step 6: Final answer
   x = 3,682.87