Finding the Third Proportional to 404,342,986 and 577,816,666

Step by Step Solution

1. Step 1: Write the proportion equation
   404,342,986 : 577,816,666 = 577,816,666 : x
2. Step 2: Convert to fraction form
   404,342,986/577,816,666 = 577,816,666/x
3. Step 3: Cross multiply
   404,342,986x = 577,816,666 × 577,816,666
4. Step 4: Simplify right side
   404,342,986x = 333,872,099,507,355,584
5. Step 5: Solve for x
   x = 333,872,099,507,355,584/404,342,986
6. Step 6: Final answer
   x = 825,715,076.23