Finding the Third Proportional to 216,568 and 333,308

Step by Step Solution

1. Step 1: Write the proportion equation
   216,568 : 333,308 = 333,308 : x
2. Step 2: Convert to fraction form
   216,568/333,308 = 333,308/x
3. Step 3: Cross multiply
   216,568x = 333,308 × 333,308
4. Step 4: Simplify right side
   216,568x = 111,094,222,864
5. Step 5: Solve for x
   x = 111,094,222,864/216,568
6. Step 6: Final answer
   x = 512,976.17