Finding the Third Proportional to 30,622.50 and 65,618.50

Step by Step Solution

1. Step 1: Write the proportion equation
   30,622.50 : 65,618.50 = 65,618.50 : x
2. Step 2: Convert to fraction form
   30,622.50/65,618.50 = 65,618.50/x
3. Step 3: Cross multiply
   30,622.50x = 65,618.50 × 65,618.50
4. Step 4: Simplify right side
   30,622.50x = 4,305,787,542.25
5. Step 5: Solve for x
   x = 4,305,787,542.25/30,622.50
6. Step 6: Final answer
   x = 140,608.62