Finding the Third Proportional to 339,677.50 and 740,394

Step by Step Solution

1. Step 1: Write the proportion equation
   339,677.50 : 740,394 = 740,394 : x
2. Step 2: Convert to fraction form
   339,677.50/740,394 = 740,394/x
3. Step 3: Cross multiply
   339,677.50x = 740,394 × 740,394
4. Step 4: Simplify right side
   339,677.50x = 548,183,275,236
5. Step 5: Solve for x
   x = 548,183,275,236/339,677.50
6. Step 6: Final answer
   x = 1,613,834.52