Finding the Third Proportional to 2,690 and 5,788

Step by Step Solution

1. Step 1: Write the proportion equation
   2,690 : 5,788 = 5,788 : x
2. Step 2: Convert to fraction form
   2,690/5,788 = 5,788/x
3. Step 3: Cross multiply
   2,690x = 5,788 × 5,788
4. Step 4: Simplify right side
   2,690x = 33,500,944
5. Step 5: Solve for x
   x = 33,500,944/2,690
6. Step 6: Final answer
   x = 12,453.88