Finding the Third Proportional to 417,222 and 856,562

Step by Step Solution

1. Step 1: Write the proportion equation
   417,222 : 856,562 = 856,562 : x
2. Step 2: Convert to fraction form
   417,222/856,562 = 856,562/x
3. Step 3: Cross multiply
   417,222x = 856,562 × 856,562
4. Step 4: Simplify right side
   417,222x = 733,698,459,844
5. Step 5: Solve for x
   x = 733,698,459,844/417,222
6. Step 6: Final answer
   x = 1,758,532.53