Finding the Third Proportional to 678,996 and 1,488,570

Step by Step Solution

1. Step 1: Write the proportion equation
   678,996 : 1,488,570 = 1,488,570 : x
2. Step 2: Convert to fraction form
   678,996/1,488,570 = 1,488,570/x
3. Step 3: Cross multiply
   678,996x = 1,488,570 × 1,488,570
4. Step 4: Simplify right side
   678,996x = 2,215,840,644,900
5. Step 5: Solve for x
   x = 2,215,840,644,900/678,996
6. Step 6: Final answer
   x = 3,263,407.51