Finding the Third Proportional to 30,879 and 67,466

Step by Step Solution

1. Step 1: Write the proportion equation
   30,879 : 67,466 = 67,466 : x
2. Step 2: Convert to fraction form
   30,879/67,466 = 67,466/x
3. Step 3: Cross multiply
   30,879x = 67,466 × 67,466
4. Step 4: Simplify right side
   30,879x = 4,551,661,156
5. Step 5: Solve for x
   x = 4,551,661,156/30,879
6. Step 6: Final answer
   x = 147,403.13