Finding the Third Proportional to 339,658 and 726,882.50

Step by Step Solution

1. Step 1: Write the proportion equation
   339,658 : 726,882.50 = 726,882.50 : x
2. Step 2: Convert to fraction form
   339,658/726,882.50 = 726,882.50/x
3. Step 3: Cross multiply
   339,658x = 726,882.50 × 726,882.50
4. Step 4: Simplify right side
   339,658x = 528,358,168,806.25
5. Step 5: Solve for x
   x = 528,358,168,806.25/339,658
6. Step 6: Final answer
   x = 1,555,559.32