Finding the Third Proportional to 1,177,638 and 2,554,428

Step by Step Solution

1. Step 1: Write the proportion equation
   1,177,638 : 2,554,428 = 2,554,428 : x
2. Step 2: Convert to fraction form
   1,177,638/2,554,428 = 2,554,428/x
3. Step 3: Cross multiply
   1,177,638x = 2,554,428 × 2,554,428
4. Step 4: Simplify right side
   1,177,638x = 6,525,102,407,184
5. Step 5: Solve for x
   x = 6,525,102,407,184/1,177,638
6. Step 6: Final answer
   x = 5,540,838.87