Finding the Third Proportional to 216,436 and 474,384

Step by Step Solution

1. Step 1: Write the proportion equation
   216,436 : 474,384 = 474,384 : x
2. Step 2: Convert to fraction form
   216,436/474,384 = 474,384/x
3. Step 3: Cross multiply
   216,436x = 474,384 × 474,384
4. Step 4: Simplify right side
   216,436x = 225,040,179,456
5. Step 5: Solve for x
   x = 225,040,179,456/216,436
6. Step 6: Final answer
   x = 1,039,753.92