Finding the Third Proportional to 687,642 and 1,051,227

Step by Step Solution

1. Step 1: Write the proportion equation
   687,642 : 1,051,227 = 1,051,227 : x
2. Step 2: Convert to fraction form
   687,642/1,051,227 = 1,051,227/x
3. Step 3: Cross multiply
   687,642x = 1,051,227 × 1,051,227
4. Step 4: Simplify right side
   687,642x = 1,105,078,205,529
5. Step 5: Solve for x
   x = 1,105,078,205,529/687,642
6. Step 6: Final answer
   x = 1,607,054.55