Finding the Third Proportional to 664,470 and 996,500

Step by Step Solution

1. Step 1: Write the proportion equation
   664,470 : 996,500 = 996,500 : x
2. Step 2: Convert to fraction form
   664,470/996,500 = 996,500/x
3. Step 3: Cross multiply
   664,470x = 996,500 × 996,500
4. Step 4: Simplify right side
   664,470x = 993,012,250,000
5. Step 5: Solve for x
   x = 993,012,250,000/664,470
6. Step 6: Final answer
   x = 1,494,442.56