Finding the Third Proportional to 339,394.50 and 746,586

Step by Step Solution

1. Step 1: Write the proportion equation
   339,394.50 : 746,586 = 746,586 : x
2. Step 2: Convert to fraction form
   339,394.50/746,586 = 746,586/x
3. Step 3: Cross multiply
   339,394.50x = 746,586 × 746,586
4. Step 4: Simplify right side
   339,394.50x = 557,390,655,396
5. Step 5: Solve for x
   x = 557,390,655,396/339,394.50
6. Step 6: Final answer
   x = 1,642,309.04