Finding the Third Proportional to 359,871 and 774,228

Step by Step Solution

1. Step 1: Write the proportion equation
   359,871 : 774,228 = 774,228 : x
2. Step 2: Convert to fraction form
   359,871/774,228 = 774,228/x
3. Step 3: Cross multiply
   359,871x = 774,228 × 774,228
4. Step 4: Simplify right side
   359,871x = 599,428,995,984
5. Step 5: Solve for x
   x = 599,428,995,984/359,871
6. Step 6: Final answer
   x = 1,665,677.41