Finding the Third Proportional to 356,504 and 774,488

Step by Step Solution

1. Step 1: Write the proportion equation
   356,504 : 774,488 = 774,488 : x
2. Step 2: Convert to fraction form
   356,504/774,488 = 774,488/x
3. Step 3: Cross multiply
   356,504x = 774,488 × 774,488
4. Step 4: Simplify right side
   356,504x = 599,831,662,144
5. Step 5: Solve for x
   x = 599,831,662,144/356,504
6. Step 6: Final answer
   x = 1,682,538.38