Finding the Third Proportional to 641,974 and 993,510

Step by Step Solution

1. Step 1: Write the proportion equation
   641,974 : 993,510 = 993,510 : x
2. Step 2: Convert to fraction form
   641,974/993,510 = 993,510/x
3. Step 3: Cross multiply
   641,974x = 993,510 × 993,510
4. Step 4: Simplify right side
   641,974x = 987,062,120,100
5. Step 5: Solve for x
   x = 987,062,120,100/641,974
6. Step 6: Final answer
   x = 1,537,542.21