Finding the Third Proportional to 2,205.56 and 5,175.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,205.56 : 5,175.56 = 5,175.56 : x
2. Step 2: Convert to fraction form
   2,205.56/5,175.56 = 5,175.56/x
3. Step 3: Cross multiply
   2,205.56x = 5,175.56 × 5,175.56
4. Step 4: Simplify right side
   2,205.56x = 26,786,447.19
5. Step 5: Solve for x
   x = 26,786,447.19/2,205.56
6. Step 6: Final answer
   x = 12,144.95