Finding the Third Proportional to 223,398 and 486,112

Step by Step Solution

1. Step 1: Write the proportion equation
   223,398 : 486,112 = 486,112 : x
2. Step 2: Convert to fraction form
   223,398/486,112 = 486,112/x
3. Step 3: Cross multiply
   223,398x = 486,112 × 486,112
4. Step 4: Simplify right side
   223,398x = 236,304,876,544
5. Step 5: Solve for x
   x = 236,304,876,544/223,398
6. Step 6: Final answer
   x = 1,057,775.26