Finding the Third Proportional to 30,880.50 and 62,854.50

Step by Step Solution

1. Step 1: Write the proportion equation
   30,880.50 : 62,854.50 = 62,854.50 : x
2. Step 2: Convert to fraction form
   30,880.50/62,854.50 = 62,854.50/x
3. Step 3: Cross multiply
   30,880.50x = 62,854.50 × 62,854.50
4. Step 4: Simplify right side
   30,880.50x = 3,950,688,170.25
5. Step 5: Solve for x
   x = 3,950,688,170.25/30,880.50
6. Step 6: Final answer
   x = 127,934.72