Finding the Third Proportional to 30,879 and 62,851.50

Step by Step Solution

1. Step 1: Write the proportion equation
   30,879 : 62,851.50 = 62,851.50 : x
2. Step 2: Convert to fraction form
   30,879/62,851.50 = 62,851.50/x
3. Step 3: Cross multiply
   30,879x = 62,851.50 × 62,851.50
4. Step 4: Simplify right side
   30,879x = 3,950,311,052.25
5. Step 5: Solve for x
   x = 3,950,311,052.25/30,879
6. Step 6: Final answer
   x = 127,928.72