Finding the Third Proportional to 417,168 and 917,256

Step by Step Solution

1. Step 1: Write the proportion equation
   417,168 : 917,256 = 917,256 : x
2. Step 2: Convert to fraction form
   417,168/917,256 = 917,256/x
3. Step 3: Cross multiply
   417,168x = 917,256 × 917,256
4. Step 4: Simplify right side
   417,168x = 841,358,569,536
5. Step 5: Solve for x
   x = 841,358,569,536/417,168
6. Step 6: Final answer
   x = 2,016,833.91