Finding the Third Proportional to 338,491.50 and 743,412

Step by Step Solution

1. Step 1: Write the proportion equation
   338,491.50 : 743,412 = 743,412 : x
2. Step 2: Convert to fraction form
   338,491.50/743,412 = 743,412/x
3. Step 3: Cross multiply
   338,491.50x = 743,412 × 743,412
4. Step 4: Simplify right side
   338,491.50x = 552,661,401,744
5. Step 5: Solve for x
   x = 552,661,401,744/338,491.50
6. Step 6: Final answer
   x = 1,632,718.70