Finding the Third Proportional to 30,868 and 63,920

Step by Step Solution

1. Step 1: Write the proportion equation
   30,868 : 63,920 = 63,920 : x
2. Step 2: Convert to fraction form
   30,868/63,920 = 63,920/x
3. Step 3: Cross multiply
   30,868x = 63,920 × 63,920
4. Step 4: Simplify right side
   30,868x = 4,085,766,400
5. Step 5: Solve for x
   x = 4,085,766,400/30,868
6. Step 6: Final answer
   x = 132,362.52