Finding the Third Proportional to 2,690.88 and 5,707.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,690.88 : 5,707.49 = 5,707.49 : x
2. Step 2: Convert to fraction form
   2,690.88/5,707.49 = 5,707.49/x
3. Step 3: Cross multiply
   2,690.88x = 5,707.49 × 5,707.49
4. Step 4: Simplify right side
   2,690.88x = 32,575,489.37
5. Step 5: Solve for x
   x = 32,575,489.37/2,690.88
6. Step 6: Final answer
   x = 12,105.90