Finding the Third Proportional to 221,508 and 472,012

Step by Step Solution

1. Step 1: Write the proportion equation
   221,508 : 472,012 = 472,012 : x
2. Step 2: Convert to fraction form
   221,508/472,012 = 472,012/x
3. Step 3: Cross multiply
   221,508x = 472,012 × 472,012
4. Step 4: Simplify right side
   221,508x = 222,795,328,144
5. Step 5: Solve for x
   x = 222,795,328,144/221,508
6. Step 6: Final answer
   x = 1,005,811.66