Finding the Third Proportional to 1,397,328 and 2,164,266

Step by Step Solution

1. Step 1: Write the proportion equation
   1,397,328 : 2,164,266 = 2,164,266 : x
2. Step 2: Convert to fraction form
   1,397,328/2,164,266 = 2,164,266/x
3. Step 3: Cross multiply
   1,397,328x = 2,164,266 × 2,164,266
4. Step 4: Simplify right side
   1,397,328x = 4,684,047,318,756
5. Step 5: Solve for x
   x = 4,684,047,318,756/1,397,328
6. Step 6: Final answer
   x = 3,352,145.89