Finding the Third Proportional to 222,205 and 317,530

Step by Step Solution

1. Step 1: Write the proportion equation
   222,205 : 317,530 = 317,530 : x
2. Step 2: Convert to fraction form
   222,205/317,530 = 317,530/x
3. Step 3: Cross multiply
   222,205x = 317,530 × 317,530
4. Step 4: Simplify right side
   222,205x = 100,825,300,900
5. Step 5: Solve for x
   x = 100,825,300,900/222,205
6. Step 6: Final answer
   x = 453,749.02