Finding the Third Proportional to 3,345,466 and 7,122,499

Step by Step Solution

1. Step 1: Write the proportion equation
   3,345,466 : 7,122,499 = 7,122,499 : x
2. Step 2: Convert to fraction form
   3,345,466/7,122,499 = 7,122,499/x
3. Step 3: Cross multiply
   3,345,466x = 7,122,499 × 7,122,499
4. Step 4: Simplify right side
   3,345,466x = 50,729,992,005,001
5. Step 5: Solve for x
   x = 50,729,992,005,001/3,345,466
6. Step 6: Final answer
   x = 15,163,804.39