Finding the Third Proportional to 5,590.69 and 12,198.94

Step by Step Solution

1. Step 1: Write the proportion equation
   5,590.69 : 12,198.94 = 12,198.94 : x
2. Step 2: Convert to fraction form
   5,590.69/12,198.94 = 12,198.94/x
3. Step 3: Cross multiply
   5,590.69x = 12,198.94 × 12,198.94
4. Step 4: Simplify right side
   5,590.69x = 148,814,076.13
5. Step 5: Solve for x
   x = 148,814,076.13/5,590.69
6. Step 6: Final answer
   x = 26,618.21