Finding the Third Proportional to 35,572.50 and 72,379.50

Step by Step Solution

1. Step 1: Write the proportion equation
   35,572.50 : 72,379.50 = 72,379.50 : x
2. Step 2: Convert to fraction form
   35,572.50/72,379.50 = 72,379.50/x
3. Step 3: Cross multiply
   35,572.50x = 72,379.50 × 72,379.50
4. Step 4: Simplify right side
   35,572.50x = 5,238,792,020.25
5. Step 5: Solve for x
   x = 5,238,792,020.25/35,572.50
6. Step 6: Final answer
   x = 147,270.84