Finding the Third Proportional to 223,218 and 490,662

Step by Step Solution

1. Step 1: Write the proportion equation
   223,218 : 490,662 = 490,662 : x
2. Step 2: Convert to fraction form
   223,218/490,662 = 490,662/x
3. Step 3: Cross multiply
   223,218x = 490,662 × 490,662
4. Step 4: Simplify right side
   223,218x = 240,749,198,244
5. Step 5: Solve for x
   x = 240,749,198,244/223,218
6. Step 6: Final answer
   x = 1,078,538.46