Finding the Third Proportional to 1,663,728 and 3,406,266

Step by Step Solution

1. Step 1: Write the proportion equation
   1,663,728 : 3,406,266 = 3,406,266 : x
2. Step 2: Convert to fraction form
   1,663,728/3,406,266 = 3,406,266/x
3. Step 3: Cross multiply
   1,663,728x = 3,406,266 × 3,406,266
4. Step 4: Simplify right side
   1,663,728x = 11,602,648,062,756
5. Step 5: Solve for x
   x = 11,602,648,062,756/1,663,728
6. Step 6: Final answer
   x = 6,973,885.19