Finding the Third Proportional to 222,665.25 and 485,291.25

Step by Step Solution

1. Step 1: Write the proportion equation
   222,665.25 : 485,291.25 = 485,291.25 : x
2. Step 2: Convert to fraction form
   222,665.25/485,291.25 = 485,291.25/x
3. Step 3: Cross multiply
   222,665.25x = 485,291.25 × 485,291.25
4. Step 4: Simplify right side
   222,665.25x = 235,507,597,326.56
5. Step 5: Solve for x
   x = 235,507,597,326.56/222,665.25
6. Step 6: Final answer
   x = 1,057,675.58