Finding the Third Proportional to 219,328 and 471,920

Step by Step Solution

1. Step 1: Write the proportion equation
   219,328 : 471,920 = 471,920 : x
2. Step 2: Convert to fraction form
   219,328/471,920 = 471,920/x
3. Step 3: Cross multiply
   219,328x = 471,920 × 471,920
4. Step 4: Simplify right side
   219,328x = 222,708,486,400
5. Step 5: Solve for x
   x = 222,708,486,400/219,328
6. Step 6: Final answer
   x = 1,015,412.93