Finding the Third Proportional to 219,566 and 472,420

Step by Step Solution

1. Step 1: Write the proportion equation
   219,566 : 472,420 = 472,420 : x
2. Step 2: Convert to fraction form
   219,566/472,420 = 472,420/x
3. Step 3: Cross multiply
   219,566x = 472,420 × 472,420
4. Step 4: Simplify right side
   219,566x = 223,180,656,400
5. Step 5: Solve for x
   x = 223,180,656,400/219,566
6. Step 6: Final answer
   x = 1,016,462.73