Finding the Third Proportional to 225,488 and 485,860

Step by Step Solution

1. Step 1: Write the proportion equation
   225,488 : 485,860 = 485,860 : x
2. Step 2: Convert to fraction form
   225,488/485,860 = 485,860/x
3. Step 3: Cross multiply
   225,488x = 485,860 × 485,860
4. Step 4: Simplify right side
   225,488x = 236,059,939,600
5. Step 5: Solve for x
   x = 236,059,939,600/225,488
6. Step 6: Final answer
   x = 1,046,884.71