Finding the Third Proportional to 222,270 and 317,618.50

Step by Step Solution

1. Step 1: Write the proportion equation
   222,270 : 317,618.50 = 317,618.50 : x
2. Step 2: Convert to fraction form
   222,270/317,618.50 = 317,618.50/x
3. Step 3: Cross multiply
   222,270x = 317,618.50 × 317,618.50
4. Step 4: Simplify right side
   222,270x = 100,881,511,542.25
5. Step 5: Solve for x
   x = 100,881,511,542.25/222,270
6. Step 6: Final answer
   x = 453,869.22