Finding the Third Proportional to 687,662 and 1,051,257

Step by Step Solution

1. Step 1: Write the proportion equation
   687,662 : 1,051,257 = 1,051,257 : x
2. Step 2: Convert to fraction form
   687,662/1,051,257 = 1,051,257/x
3. Step 3: Cross multiply
   687,662x = 1,051,257 × 1,051,257
4. Step 4: Simplify right side
   687,662x = 1,105,141,280,049
5. Step 5: Solve for x
   x = 1,105,141,280,049/687,662
6. Step 6: Final answer
   x = 1,607,099.53