Finding the Third Proportional to 221,109 and 333,513

Step by Step Solution

1. Step 1: Write the proportion equation
   221,109 : 333,513 = 333,513 : x
2. Step 2: Convert to fraction form
   221,109/333,513 = 333,513/x
3. Step 3: Cross multiply
   221,109x = 333,513 × 333,513
4. Step 4: Simplify right side
   221,109x = 111,230,921,169
5. Step 5: Solve for x
   x = 111,230,921,169/221,109
6. Step 6: Final answer
   x = 503,059.22