Finding the Third Proportional to 2,558 and 5,494

Step by Step Solution

1. Step 1: Write the proportion equation
   2,558 : 5,494 = 5,494 : x
2. Step 2: Convert to fraction form
   2,558/5,494 = 5,494/x
3. Step 3: Cross multiply
   2,558x = 5,494 × 5,494
4. Step 4: Simplify right side
   2,558x = 30,184,036
5. Step 5: Solve for x
   x = 30,184,036/2,558
6. Step 6: Final answer
   x = 11,799.86