Finding the Third Proportional to 1,270.69 and 3,424.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,270.69 : 3,424.78 = 3,424.78 : x
2. Step 2: Convert to fraction form
   1,270.69/3,424.78 = 3,424.78/x
3. Step 3: Cross multiply
   1,270.69x = 3,424.78 × 3,424.78
4. Step 4: Simplify right side
   1,270.69x = 11,729,126.61
5. Step 5: Solve for x
   x = 11,729,126.61/1,270.69
6. Step 6: Final answer
   x = 9,230.54