Finding the Third Proportional to 86,355,413.25 and 123,489,256.50

Step by Step Solution

1. Step 1: Write the proportion equation
   86,355,413.25 : 123,489,256.50 = 123,489,256.50 : x
2. Step 2: Convert to fraction form
   86,355,413.25/123,489,256.50 = 123,489,256.50/x
3. Step 3: Cross multiply
   86,355,413.25x = 123,489,256.50 × 123,489,256.50
4. Step 4: Simplify right side
   86,355,413.25x = 15,249,596,470,922,792
5. Step 5: Solve for x
   x = 15,249,596,470,922,792/86,355,413.25
6. Step 6: Final answer
   x = 176,591,089.05