Finding the Third Proportional to 668,784 and 1,446,648

Step by Step Solution

1. Step 1: Write the proportion equation
   668,784 : 1,446,648 = 1,446,648 : x
2. Step 2: Convert to fraction form
   668,784/1,446,648 = 1,446,648/x
3. Step 3: Cross multiply
   668,784x = 1,446,648 × 1,446,648
4. Step 4: Simplify right side
   668,784x = 2,092,790,435,904
5. Step 5: Solve for x
   x = 2,092,790,435,904/668,784
6. Step 6: Final answer
   x = 3,129,247.16