Finding the Third Proportional to 31,467.75 and 68,413.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,467.75 : 68,413.50 = 68,413.50 : x
2. Step 2: Convert to fraction form
   31,467.75/68,413.50 = 68,413.50/x
3. Step 3: Cross multiply
   31,467.75x = 68,413.50 × 68,413.50
4. Step 4: Simplify right side
   31,467.75x = 4,680,406,982.25
5. Step 5: Solve for x
   x = 4,680,406,982.25/31,467.75
6. Step 6: Final answer
   x = 148,736.63