Finding the Third Proportional to 338,272.50 and 743,505

Step by Step Solution

1. Step 1: Write the proportion equation
   338,272.50 : 743,505 = 743,505 : x
2. Step 2: Convert to fraction form
   338,272.50/743,505 = 743,505/x
3. Step 3: Cross multiply
   338,272.50x = 743,505 × 743,505
4. Step 4: Simplify right side
   338,272.50x = 552,799,685,025
5. Step 5: Solve for x
   x = 552,799,685,025/338,272.50
6. Step 6: Final answer
   x = 1,634,184.53