Finding the Third Proportional to 640,206 and 1,375,304

Step by Step Solution

1. Step 1: Write the proportion equation
   640,206 : 1,375,304 = 1,375,304 : x
2. Step 2: Convert to fraction form
   640,206/1,375,304 = 1,375,304/x
3. Step 3: Cross multiply
   640,206x = 1,375,304 × 1,375,304
4. Step 4: Simplify right side
   640,206x = 1,891,461,092,416
5. Step 5: Solve for x
   x = 1,891,461,092,416/640,206
6. Step 6: Final answer
   x = 2,954,456.99