Finding the Third Proportional to 1,831,692 and 3,978,648

Step by Step Solution

1. Step 1: Write the proportion equation
   1,831,692 : 3,978,648 = 3,978,648 : x
2. Step 2: Convert to fraction form
   1,831,692/3,978,648 = 3,978,648/x
3. Step 3: Cross multiply
   1,831,692x = 3,978,648 × 3,978,648
4. Step 4: Simplify right side
   1,831,692x = 15,829,639,907,904
5. Step 5: Solve for x
   x = 15,829,639,907,904/1,831,692
6. Step 6: Final answer
   x = 8,642,086.06