Finding the Third Proportional to 1,842,642 and 3,987,108

Step by Step Solution

1. Step 1: Write the proportion equation
   1,842,642 : 3,987,108 = 3,987,108 : x
2. Step 2: Convert to fraction form
   1,842,642/3,987,108 = 3,987,108/x
3. Step 3: Cross multiply
   1,842,642x = 3,987,108 × 3,987,108
4. Step 4: Simplify right side
   1,842,642x = 15,897,030,203,664
5. Step 5: Solve for x
   x = 15,897,030,203,664/1,842,642
6. Step 6: Final answer
   x = 8,627,302.65