Finding the Third Proportional to 5,578 and 10,994

Step by Step Solution

1. Step 1: Write the proportion equation
   5,578 : 10,994 = 10,994 : x
2. Step 2: Convert to fraction form
   5,578/10,994 = 10,994/x
3. Step 3: Cross multiply
   5,578x = 10,994 × 10,994
4. Step 4: Simplify right side
   5,578x = 120,868,036
5. Step 5: Solve for x
   x = 120,868,036/5,578
6. Step 6: Final answer
   x = 21,668.70