Finding the Third Proportional to 687,910 and 1,030,217

Step by Step Solution

1. Step 1: Write the proportion equation
   687,910 : 1,030,217 = 1,030,217 : x
2. Step 2: Convert to fraction form
   687,910/1,030,217 = 1,030,217/x
3. Step 3: Cross multiply
   687,910x = 1,030,217 × 1,030,217
4. Step 4: Simplify right side
   687,910x = 1,061,347,067,089
5. Step 5: Solve for x
   x = 1,061,347,067,089/687,910
6. Step 6: Final answer
   x = 1,542,857.45