Finding the Third Proportional to 3,405.23 and 7,413.47

Step by Step Solution

1. Step 1: Write the proportion equation
   3,405.23 : 7,413.47 = 7,413.47 : x
2. Step 2: Convert to fraction form
   3,405.23/7,413.47 = 7,413.47/x
3. Step 3: Cross multiply
   3,405.23x = 7,413.47 × 7,413.47
4. Step 4: Simplify right side
   3,405.23x = 54,959,518.91
5. Step 5: Solve for x
   x = 54,959,518.91/3,405.23
6. Step 6: Final answer
   x = 16,139.72