Finding the Third Proportional to 2,906,147 and 3,989,344

Step by Step Solution

1. Step 1: Write the proportion equation
   2,906,147 : 3,989,344 = 3,989,344 : x
2. Step 2: Convert to fraction form
   2,906,147/3,989,344 = 3,989,344/x
3. Step 3: Cross multiply
   2,906,147x = 3,989,344 × 3,989,344
4. Step 4: Simplify right side
   2,906,147x = 15,914,865,550,336
5. Step 5: Solve for x
   x = 15,914,865,550,336/2,906,147
6. Step 6: Final answer
   x = 5,476,276.85