Finding the Third Proportional to 217,136 and 472,504

Step by Step Solution

1. Step 1: Write the proportion equation
   217,136 : 472,504 = 472,504 : x
2. Step 2: Convert to fraction form
   217,136/472,504 = 472,504/x
3. Step 3: Cross multiply
   217,136x = 472,504 × 472,504
4. Step 4: Simplify right side
   217,136x = 223,260,030,016
5. Step 5: Solve for x
   x = 223,260,030,016/217,136
6. Step 6: Final answer
   x = 1,028,203.66