Finding the Third Proportional to 1,831,578 and 3,978,444

Step by Step Solution

1. Step 1: Write the proportion equation
   1,831,578 : 3,978,444 = 3,978,444 : x
2. Step 2: Convert to fraction form
   1,831,578/3,978,444 = 3,978,444/x
3. Step 3: Cross multiply
   1,831,578x = 3,978,444 × 3,978,444
4. Step 4: Simplify right side
   1,831,578x = 15,828,016,661,136
5. Step 5: Solve for x
   x = 15,828,016,661,136/1,831,578
6. Step 6: Final answer
   x = 8,641,737.70