Finding the Third Proportional to 386,622 and 567,216

Step by Step Solution

1. Step 1: Write the proportion equation
   386,622 : 567,216 = 567,216 : x
2. Step 2: Convert to fraction form
   386,622/567,216 = 567,216/x
3. Step 3: Cross multiply
   386,622x = 567,216 × 567,216
4. Step 4: Simplify right side
   386,622x = 321,733,990,656
5. Step 5: Solve for x
   x = 321,733,990,656/386,622
6. Step 6: Final answer
   x = 832,166.80