Finding the Third Proportional to 217,012 and 475,400

Step by Step Solution

1. Step 1: Write the proportion equation
   217,012 : 475,400 = 475,400 : x
2. Step 2: Convert to fraction form
   217,012/475,400 = 475,400/x
3. Step 3: Cross multiply
   217,012x = 475,400 × 475,400
4. Step 4: Simplify right side
   217,012x = 226,005,160,000
5. Step 5: Solve for x
   x = 226,005,160,000/217,012
6. Step 6: Final answer
   x = 1,041,440.84