Finding the Third Proportional to 428,040 and 903,799

Step by Step Solution

1. Step 1: Write the proportion equation
   428,040 : 903,799 = 903,799 : x
2. Step 2: Convert to fraction form
   428,040/903,799 = 903,799/x
3. Step 3: Cross multiply
   428,040x = 903,799 × 903,799
4. Step 4: Simplify right side
   428,040x = 816,852,632,401
5. Step 5: Solve for x
   x = 816,852,632,401/428,040
6. Step 6: Final answer
   x = 1,908,355.84