Finding the Third Proportional to 1,431,642 and 3,087,456

Step by Step Solution

1. Step 1: Write the proportion equation
   1,431,642 : 3,087,456 = 3,087,456 : x
2. Step 2: Convert to fraction form
   1,431,642/3,087,456 = 3,087,456/x
3. Step 3: Cross multiply
   1,431,642x = 3,087,456 × 3,087,456
4. Step 4: Simplify right side
   1,431,642x = 9,532,384,551,936
5. Step 5: Solve for x
   x = 9,532,384,551,936/1,431,642
6. Step 6: Final answer
   x = 6,658,357.71