Finding the Third Proportional to 220,908 and 480,920

Step by Step Solution

1. Step 1: Write the proportion equation
   220,908 : 480,920 = 480,920 : x
2. Step 2: Convert to fraction form
   220,908/480,920 = 480,920/x
3. Step 3: Cross multiply
   220,908x = 480,920 × 480,920
4. Step 4: Simplify right side
   220,908x = 231,284,046,400
5. Step 5: Solve for x
   x = 231,284,046,400/220,908
6. Step 6: Final answer
   x = 1,046,969.99