Finding the Third Proportional to 678,078 and 1,446,120

Step by Step Solution

1. Step 1: Write the proportion equation
   678,078 : 1,446,120 = 1,446,120 : x
2. Step 2: Convert to fraction form
   678,078/1,446,120 = 1,446,120/x
3. Step 3: Cross multiply
   678,078x = 1,446,120 × 1,446,120
4. Step 4: Simplify right side
   678,078x = 2,091,263,054,400
5. Step 5: Solve for x
   x = 2,091,263,054,400/678,078
6. Step 6: Final answer
   x = 3,084,103.97