Finding the Third Proportional to 338,269.50 and 743,499

Step by Step Solution

1. Step 1: Write the proportion equation
   338,269.50 : 743,499 = 743,499 : x
2. Step 2: Convert to fraction form
   338,269.50/743,499 = 743,499/x
3. Step 3: Cross multiply
   338,269.50x = 743,499 × 743,499
4. Step 4: Simplify right side
   338,269.50x = 552,790,763,001
5. Step 5: Solve for x
   x = 552,790,763,001/338,269.50
6. Step 6: Final answer
   x = 1,634,172.64