Finding the Third Proportional to 167,715 and 257,413.50

Step by Step Solution

1. Step 1: Write the proportion equation
   167,715 : 257,413.50 = 257,413.50 : x
2. Step 2: Convert to fraction form
   167,715/257,413.50 = 257,413.50/x
3. Step 3: Cross multiply
   167,715x = 257,413.50 × 257,413.50
4. Step 4: Simplify right side
   167,715x = 66,261,709,982.25
5. Step 5: Solve for x
   x = 66,261,709,982.25/167,715
6. Step 6: Final answer
   x = 395,085.17