Finding the Third Proportional to 428,397 and 930,540

Step by Step Solution

1. Step 1: Write the proportion equation
   428,397 : 930,540 = 930,540 : x
2. Step 2: Convert to fraction form
   428,397/930,540 = 930,540/x
3. Step 3: Cross multiply
   428,397x = 930,540 × 930,540
4. Step 4: Simplify right side
   428,397x = 865,904,691,600
5. Step 5: Solve for x
   x = 865,904,691,600/428,397
6. Step 6: Final answer
   x = 2,021,266.94