Finding the Third Proportional to 1,663,799 and 3,406,456

Step by Step Solution

1. Step 1: Write the proportion equation
   1,663,799 : 3,406,456 = 3,406,456 : x
2. Step 2: Convert to fraction form
   1,663,799/3,406,456 = 3,406,456/x
3. Step 3: Cross multiply
   1,663,799x = 3,406,456 × 3,406,456
4. Step 4: Simplify right side
   1,663,799x = 11,603,942,479,936
5. Step 5: Solve for x
   x = 11,603,942,479,936/1,663,799
6. Step 6: Final answer
   x = 6,974,365.58