Finding the Third Proportional to 222,840 and 487,786.50

Step by Step Solution

1. Step 1: Write the proportion equation
   222,840 : 487,786.50 = 487,786.50 : x
2. Step 2: Convert to fraction form
   222,840/487,786.50 = 487,786.50/x
3. Step 3: Cross multiply
   222,840x = 487,786.50 × 487,786.50
4. Step 4: Simplify right side
   222,840x = 237,935,669,582.25
5. Step 5: Solve for x
   x = 237,935,669,582.25/222,840
6. Step 6: Final answer
   x = 1,067,742.19