Finding the Third Proportional to 388,960 and 804,918

Step by Step Solution

1. Step 1: Write the proportion equation
   388,960 : 804,918 = 804,918 : x
2. Step 2: Convert to fraction form
   388,960/804,918 = 804,918/x
3. Step 3: Cross multiply
   388,960x = 804,918 × 804,918
4. Step 4: Simplify right side
   388,960x = 647,892,986,724
5. Step 5: Solve for x
   x = 647,892,986,724/388,960
6. Step 6: Final answer
   x = 1,665,705.95