Finding the Third Proportional to 215,136 and 472,734

Step by Step Solution

1. Step 1: Write the proportion equation
   215,136 : 472,734 = 472,734 : x
2. Step 2: Convert to fraction form
   215,136/472,734 = 472,734/x
3. Step 3: Cross multiply
   215,136x = 472,734 × 472,734
4. Step 4: Simplify right side
   215,136x = 223,477,434,756
5. Step 5: Solve for x
   x = 223,477,434,756/215,136
6. Step 6: Final answer
   x = 1,038,772.84