Finding the Third Proportional to 1,392,312 and 3,040,272

Step by Step Solution

1. Step 1: Write the proportion equation
   1,392,312 : 3,040,272 = 3,040,272 : x
2. Step 2: Convert to fraction form
   1,392,312/3,040,272 = 3,040,272/x
3. Step 3: Cross multiply
   1,392,312x = 3,040,272 × 3,040,272
4. Step 4: Simplify right side
   1,392,312x = 9,243,253,833,984
5. Step 5: Solve for x
   x = 9,243,253,833,984/1,392,312
6. Step 6: Final answer
   x = 6,638,780.56