Finding the Third Proportional to 339,493.50 and 744,271.50

Step by Step Solution

1. Step 1: Write the proportion equation
   339,493.50 : 744,271.50 = 744,271.50 : x
2. Step 2: Convert to fraction form
   339,493.50/744,271.50 = 744,271.50/x
3. Step 3: Cross multiply
   339,493.50x = 744,271.50 × 744,271.50
4. Step 4: Simplify right side
   339,493.50x = 553,940,065,712.25
5. Step 5: Solve for x
   x = 553,940,065,712.25/339,493.50
6. Step 6: Final answer
   x = 1,631,666.19