Finding the Third Proportional to 658,611 and 993,105

Step by Step Solution

1. Step 1: Write the proportion equation
   658,611 : 993,105 = 993,105 : x
2. Step 2: Convert to fraction form
   658,611/993,105 = 993,105/x
3. Step 3: Cross multiply
   658,611x = 993,105 × 993,105
4. Step 4: Simplify right side
   658,611x = 986,257,541,025
5. Step 5: Solve for x
   x = 986,257,541,025/658,611
6. Step 6: Final answer
   x = 1,497,481.12