Finding the Third Proportional to 30,664 and 67,879

Step by Step Solution

1. Step 1: Write the proportion equation
   30,664 : 67,879 = 67,879 : x
2. Step 2: Convert to fraction form
   30,664/67,879 = 67,879/x
3. Step 3: Cross multiply
   30,664x = 67,879 × 67,879
4. Step 4: Simplify right side
   30,664x = 4,607,558,641
5. Step 5: Solve for x
   x = 4,607,558,641/30,664
6. Step 6: Final answer
   x = 150,259.54