Finding the Third Proportional to 669,684 and 1,404,756

Step by Step Solution

1. Step 1: Write the proportion equation
   669,684 : 1,404,756 = 1,404,756 : x
2. Step 2: Convert to fraction form
   669,684/1,404,756 = 1,404,756/x
3. Step 3: Cross multiply
   669,684x = 1,404,756 × 1,404,756
4. Step 4: Simplify right side
   669,684x = 1,973,339,419,536
5. Step 5: Solve for x
   x = 1,973,339,419,536/669,684
6. Step 6: Final answer
   x = 2,946,672.49