Finding the Third Proportional to 222,180 and 317,494.50

Step by Step Solution

1. Step 1: Write the proportion equation
   222,180 : 317,494.50 = 317,494.50 : x
2. Step 2: Convert to fraction form
   222,180/317,494.50 = 317,494.50/x
3. Step 3: Cross multiply
   222,180x = 317,494.50 × 317,494.50
4. Step 4: Simplify right side
   222,180x = 100,802,757,530.25
5. Step 5: Solve for x
   x = 100,802,757,530.25/222,180
6. Step 6: Final answer
   x = 453,698.61