Finding the Third Proportional to 5,384,646 and 7,992,420

Step by Step Solution

1. Step 1: Write the proportion equation
   5,384,646 : 7,992,420 = 7,992,420 : x
2. Step 2: Convert to fraction form
   5,384,646/7,992,420 = 7,992,420/x
3. Step 3: Cross multiply
   5,384,646x = 7,992,420 × 7,992,420
4. Step 4: Simplify right side
   5,384,646x = 63,878,777,456,400
5. Step 5: Solve for x
   x = 63,878,777,456,400/5,384,646
6. Step 6: Final answer
   x = 11,863,134.08