Finding the Third Proportional to 321,436 and 700,017

Step by Step Solution

1. Step 1: Write the proportion equation
   321,436 : 700,017 = 700,017 : x
2. Step 2: Convert to fraction form
   321,436/700,017 = 700,017/x
3. Step 3: Cross multiply
   321,436x = 700,017 × 700,017
4. Step 4: Simplify right side
   321,436x = 490,023,800,289
5. Step 5: Solve for x
   x = 490,023,800,289/321,436
6. Step 6: Final answer
   x = 1,524,483.26