Finding the Third Proportional to 225,128 and 480,388

Step by Step Solution

1. Step 1: Write the proportion equation
   225,128 : 480,388 = 480,388 : x
2. Step 2: Convert to fraction form
   225,128/480,388 = 480,388/x
3. Step 3: Cross multiply
   225,128x = 480,388 × 480,388
4. Step 4: Simplify right side
   225,128x = 230,772,630,544
5. Step 5: Solve for x
   x = 230,772,630,544/225,128
6. Step 6: Final answer
   x = 1,025,072.98