Finding the Third Proportional to 1,521,455 and 3,212,672

Step by Step Solution

1. Step 1: Write the proportion equation
   1,521,455 : 3,212,672 = 3,212,672 : x
2. Step 2: Convert to fraction form
   1,521,455/3,212,672 = 3,212,672/x
3. Step 3: Cross multiply
   1,521,455x = 3,212,672 × 3,212,672
4. Step 4: Simplify right side
   1,521,455x = 10,321,261,379,584
5. Step 5: Solve for x
   x = 10,321,261,379,584/1,521,455
6. Step 6: Final answer
   x = 6,783,809.83