Finding the Third Proportional to 18,485.50 and 39,735.50

Step by Step Solution

1. Step 1: Write the proportion equation
   18,485.50 : 39,735.50 = 39,735.50 : x
2. Step 2: Convert to fraction form
   18,485.50/39,735.50 = 39,735.50/x
3. Step 3: Cross multiply
   18,485.50x = 39,735.50 × 39,735.50
4. Step 4: Simplify right side
   18,485.50x = 1,578,909,960.25
5. Step 5: Solve for x
   x = 1,578,909,960.25/18,485.50
6. Step 6: Final answer
   x = 85,413.43