Finding the Third Proportional to 356,986 and 743,564

Step by Step Solution

1. Step 1: Write the proportion equation
   356,986 : 743,564 = 743,564 : x
2. Step 2: Convert to fraction form
   356,986/743,564 = 743,564/x
3. Step 3: Cross multiply
   356,986x = 743,564 × 743,564
4. Step 4: Simplify right side
   356,986x = 552,887,422,096
5. Step 5: Solve for x
   x = 552,887,422,096/356,986
6. Step 6: Final answer
   x = 1,548,765.00