Finding the Third Proportional to 678,971 and 1,488,514

Step by Step Solution

1. Step 1: Write the proportion equation
   678,971 : 1,488,514 = 1,488,514 : x
2. Step 2: Convert to fraction form
   678,971/1,488,514 = 1,488,514/x
3. Step 3: Cross multiply
   678,971x = 1,488,514 × 1,488,514
4. Step 4: Simplify right side
   678,971x = 2,215,673,928,196
5. Step 5: Solve for x
   x = 2,215,673,928,196/678,971
6. Step 6: Final answer
   x = 3,263,282.13