Finding the Third Proportional to 339,810 and 738,692

Step by Step Solution

1. Step 1: Write the proportion equation
   339,810 : 738,692 = 738,692 : x
2. Step 2: Convert to fraction form
   339,810/738,692 = 738,692/x
3. Step 3: Cross multiply
   339,810x = 738,692 × 738,692
4. Step 4: Simplify right side
   339,810x = 545,665,870,864
5. Step 5: Solve for x
   x = 545,665,870,864/339,810
6. Step 6: Final answer
   x = 1,605,796.98