Finding the Third Proportional to 1,379.75 and 2,690.13

Step by Step Solution

1. Step 1: Write the proportion equation
   1,379.75 : 2,690.13 = 2,690.13 : x
2. Step 2: Convert to fraction form
   1,379.75/2,690.13 = 2,690.13/x
3. Step 3: Cross multiply
   1,379.75x = 2,690.13 × 2,690.13
4. Step 4: Simplify right side
   1,379.75x = 7,236,772.52
5. Step 5: Solve for x
   x = 7,236,772.52/1,379.75
6. Step 6: Final answer
   x = 5,244.99