Finding the Third Proportional to 640,014 and 1,400,556

Step by Step Solution

1. Step 1: Write the proportion equation
   640,014 : 1,400,556 = 1,400,556 : x
2. Step 2: Convert to fraction form
   640,014/1,400,556 = 1,400,556/x
3. Step 3: Cross multiply
   640,014x = 1,400,556 × 1,400,556
4. Step 4: Simplify right side
   640,014x = 1,961,557,109,136
5. Step 5: Solve for x
   x = 1,961,557,109,136/640,014
6. Step 6: Final answer
   x = 3,064,865.94