Finding the Third Proportional to 338,482.50 and 743,400

Step by Step Solution

1. Step 1: Write the proportion equation
   338,482.50 : 743,400 = 743,400 : x
2. Step 2: Convert to fraction form
   338,482.50/743,400 = 743,400/x
3. Step 3: Cross multiply
   338,482.50x = 743,400 × 743,400
4. Step 4: Simplify right side
   338,482.50x = 552,643,560,000
5. Step 5: Solve for x
   x = 552,643,560,000/338,482.50
6. Step 6: Final answer
   x = 1,632,709.40