Finding the Third Proportional to 300,868 and 655,698

Step by Step Solution

1. Step 1: Write the proportion equation
   300,868 : 655,698 = 655,698 : x
2. Step 2: Convert to fraction form
   300,868/655,698 = 655,698/x
3. Step 3: Cross multiply
   300,868x = 655,698 × 655,698
4. Step 4: Simplify right side
   300,868x = 429,939,867,204
5. Step 5: Solve for x
   x = 429,939,867,204/300,868
6. Step 6: Final answer
   x = 1,428,998.32