Finding the Third Proportional to 1,831,672 and 3,978,607

Step by Step Solution

1. Step 1: Write the proportion equation
   1,831,672 : 3,978,607 = 3,978,607 : x
2. Step 2: Convert to fraction form
   1,831,672/3,978,607 = 3,978,607/x
3. Step 3: Cross multiply
   1,831,672x = 3,978,607 × 3,978,607
4. Step 4: Simplify right side
   1,831,672x = 15,829,313,660,449
5. Step 5: Solve for x
   x = 15,829,313,660,449/1,831,672
6. Step 6: Final answer
   x = 8,642,002.31