Finding the Third Proportional to 69,432 and 149,413.50

Step by Step Solution

1. Step 1: Write the proportion equation
   69,432 : 149,413.50 = 149,413.50 : x
2. Step 2: Convert to fraction form
   69,432/149,413.50 = 149,413.50/x
3. Step 3: Cross multiply
   69,432x = 149,413.50 × 149,413.50
4. Step 4: Simplify right side
   69,432x = 22,324,393,982.25
5. Step 5: Solve for x
   x = 22,324,393,982.25/69,432
6. Step 6: Final answer
   x = 321,528.89