Finding the Third Proportional to 30,212 and 65,286

Step by Step Solution

1. Step 1: Write the proportion equation
   30,212 : 65,286 = 65,286 : x
2. Step 2: Convert to fraction form
   30,212/65,286 = 65,286/x
3. Step 3: Cross multiply
   30,212x = 65,286 × 65,286
4. Step 4: Simplify right side
   30,212x = 4,262,261,796
5. Step 5: Solve for x
   x = 4,262,261,796/30,212
6. Step 6: Final answer
   x = 141,078.44