Finding the Third Proportional to 143,098,413.75 and 308,858,521.50

Step by Step Solution

1. Step 1: Write the proportion equation
   143,098,413.75 : 308,858,521.50 = 308,858,521.50 : x
2. Step 2: Convert to fraction form
   143,098,413.75/308,858,521.50 = 308,858,521.50/x
3. Step 3: Cross multiply
   143,098,413.75x = 308,858,521.50 × 308,858,521.50
4. Step 4: Simplify right side
   143,098,413.75x = 95,393,586,303,165,968
5. Step 5: Solve for x
   x = 95,393,586,303,165,968/143,098,413.75
6. Step 6: Final answer
   x = 666,629,236.50