Finding the Third Proportional to 2,906,172 and 3,989,382

Step by Step Solution

1. Step 1: Write the proportion equation
   2,906,172 : 3,989,382 = 3,989,382 : x
2. Step 2: Convert to fraction form
   2,906,172/3,989,382 = 3,989,382/x
3. Step 3: Cross multiply
   2,906,172x = 3,989,382 × 3,989,382
4. Step 4: Simplify right side
   2,906,172x = 15,915,168,741,924
5. Step 5: Solve for x
   x = 15,915,168,741,924/2,906,172
6. Step 6: Final answer
   x = 5,476,334.07