Finding the Third Proportional to 405,684 and 904,648

Step by Step Solution

1. Step 1: Write the proportion equation
   405,684 : 904,648 = 904,648 : x
2. Step 2: Convert to fraction form
   405,684/904,648 = 904,648/x
3. Step 3: Cross multiply
   405,684x = 904,648 × 904,648
4. Step 4: Simplify right side
   405,684x = 818,388,003,904
5. Step 5: Solve for x
   x = 818,388,003,904/405,684
6. Step 6: Final answer
   x = 2,017,304.12