Finding the Third Proportional to 228,434 and 490,888

Step by Step Solution

1. Step 1: Write the proportion equation
   228,434 : 490,888 = 490,888 : x
2. Step 2: Convert to fraction form
   228,434/490,888 = 490,888/x
3. Step 3: Cross multiply
   228,434x = 490,888 × 490,888
4. Step 4: Simplify right side
   228,434x = 240,971,028,544
5. Step 5: Solve for x
   x = 240,971,028,544/228,434
6. Step 6: Final answer
   x = 1,054,882.50