Finding the Third Proportional to 220,692 and 472,488

Step by Step Solution

1. Step 1: Write the proportion equation
   220,692 : 472,488 = 472,488 : x
2. Step 2: Convert to fraction form
   220,692/472,488 = 472,488/x
3. Step 3: Cross multiply
   220,692x = 472,488 × 472,488
4. Step 4: Simplify right side
   220,692x = 223,244,910,144
5. Step 5: Solve for x
   x = 223,244,910,144/220,692
6. Step 6: Final answer
   x = 1,011,567.75