Finding the Third Proportional to 221,692 and 474,890

Step by Step Solution

1. Step 1: Write the proportion equation
   221,692 : 474,890 = 474,890 : x
2. Step 2: Convert to fraction form
   221,692/474,890 = 474,890/x
3. Step 3: Cross multiply
   221,692x = 474,890 × 474,890
4. Step 4: Simplify right side
   221,692x = 225,520,512,100
5. Step 5: Solve for x
   x = 225,520,512,100/221,692
6. Step 6: Final answer
   x = 1,017,269.51