Finding the Third Proportional to 664,769 and 996,870

Step by Step Solution

1. Step 1: Write the proportion equation
   664,769 : 996,870 = 996,870 : x
2. Step 2: Convert to fraction form
   664,769/996,870 = 996,870/x
3. Step 3: Cross multiply
   664,769x = 996,870 × 996,870
4. Step 4: Simplify right side
   664,769x = 993,749,796,900
5. Step 5: Solve for x
   x = 993,749,796,900/664,769
6. Step 6: Final answer
   x = 1,494,879.87