Finding the Third Proportional to 221,012 and 333,356

Step by Step Solution

1. Step 1: Write the proportion equation
   221,012 : 333,356 = 333,356 : x
2. Step 2: Convert to fraction form
   221,012/333,356 = 333,356/x
3. Step 3: Cross multiply
   221,012x = 333,356 × 333,356
4. Step 4: Simplify right side
   221,012x = 111,126,222,736
5. Step 5: Solve for x
   x = 111,126,222,736/221,012
6. Step 6: Final answer
   x = 502,806.29