Finding the Third Proportional to 31,467.66 and 68,413.78

Step by Step Solution

1. Step 1: Write the proportion equation
   31,467.66 : 68,413.78 = 68,413.78 : x
2. Step 2: Convert to fraction form
   31,467.66/68,413.78 = 68,413.78/x
3. Step 3: Cross multiply
   31,467.66x = 68,413.78 × 68,413.78
4. Step 4: Simplify right side
   31,467.66x = 4,680,445,464.92
5. Step 5: Solve for x
   x = 4,680,445,464.92/31,467.66
6. Step 6: Final answer
   x = 148,738.29