Finding the Third Proportional to 2,906,138 and 3,989,334

Step by Step Solution

1. Step 1: Write the proportion equation
   2,906,138 : 3,989,334 = 3,989,334 : x
2. Step 2: Convert to fraction form
   2,906,138/3,989,334 = 3,989,334/x
3. Step 3: Cross multiply
   2,906,138x = 3,989,334 × 3,989,334
4. Step 4: Simplify right side
   2,906,138x = 15,914,785,763,556
5. Step 5: Solve for x
   x = 15,914,785,763,556/2,906,138
6. Step 6: Final answer
   x = 5,476,266.36