Finding the Third Proportional to 64,413.50 and 89,005

Step by Step Solution

1. Step 1: Write the proportion equation
   64,413.50 : 89,005 = 89,005 : x
2. Step 2: Convert to fraction form
   64,413.50/89,005 = 89,005/x
3. Step 3: Cross multiply
   64,413.50x = 89,005 × 89,005
4. Step 4: Simplify right side
   64,413.50x = 7,921,890,025
5. Step 5: Solve for x
   x = 7,921,890,025/64,413.50
6. Step 6: Final answer
   x = 122,984.93