Finding the Third Proportional to 678,963 and 1,488,498

Step by Step Solution

1. Step 1: Write the proportion equation
   678,963 : 1,488,498 = 1,488,498 : x
2. Step 2: Convert to fraction form
   678,963/1,488,498 = 1,488,498/x
3. Step 3: Cross multiply
   678,963x = 1,488,498 × 1,488,498
4. Step 4: Simplify right side
   678,963x = 2,215,626,296,004
5. Step 5: Solve for x
   x = 2,215,626,296,004/678,963
6. Step 6: Final answer
   x = 3,263,250.42