Finding the Third Proportional to 59,413.50 and 90,213.75

Step by Step Solution

1. Step 1: Write the proportion equation
   59,413.50 : 90,213.75 = 90,213.75 : x
2. Step 2: Convert to fraction form
   59,413.50/90,213.75 = 90,213.75/x
3. Step 3: Cross multiply
   59,413.50x = 90,213.75 × 90,213.75
4. Step 4: Simplify right side
   59,413.50x = 8,138,520,689.06
5. Step 5: Solve for x
   x = 8,138,520,689.06/59,413.50
6. Step 6: Final answer
   x = 136,981.00