Finding the Third Proportional to 56,961 and 85,413.50

Step by Step Solution

1. Step 1: Write the proportion equation
   56,961 : 85,413.50 = 85,413.50 : x
2. Step 2: Convert to fraction form
   56,961/85,413.50 = 85,413.50/x
3. Step 3: Cross multiply
   56,961x = 85,413.50 × 85,413.50
4. Step 4: Simplify right side
   56,961x = 7,295,465,982.25
5. Step 5: Solve for x
   x = 7,295,465,982.25/56,961
6. Step 6: Final answer
   x = 128,078.26