Finding the Third Proportional to 640,012 and 1,400,552

Step by Step Solution

1. Step 1: Write the proportion equation
   640,012 : 1,400,552 = 1,400,552 : x
2. Step 2: Convert to fraction form
   640,012/1,400,552 = 1,400,552/x
3. Step 3: Cross multiply
   640,012x = 1,400,552 × 1,400,552
4. Step 4: Simplify right side
   640,012x = 1,961,545,904,704
5. Step 5: Solve for x
   x = 1,961,545,904,704/640,012
6. Step 6: Final answer
   x = 3,064,858.01