Finding the Third Proportional to 1,644,308 and 3,586,640

Step by Step Solution

1. Step 1: Write the proportion equation
   1,644,308 : 3,586,640 = 3,586,640 : x
2. Step 2: Convert to fraction form
   1,644,308/3,586,640 = 3,586,640/x
3. Step 3: Cross multiply
   1,644,308x = 3,586,640 × 3,586,640
4. Step 4: Simplify right side
   1,644,308x = 12,863,986,489,600
5. Step 5: Solve for x
   x = 12,863,986,489,600/1,644,308
6. Step 6: Final answer
   x = 7,823,343.61