Finding the Third Proportional to 329,661 and 705,978

Step by Step Solution

1. Step 1: Write the proportion equation
   329,661 : 705,978 = 705,978 : x
2. Step 2: Convert to fraction form
   329,661/705,978 = 705,978/x
3. Step 3: Cross multiply
   329,661x = 705,978 × 705,978
4. Step 4: Simplify right side
   329,661x = 498,404,936,484
5. Step 5: Solve for x
   x = 498,404,936,484/329,661
6. Step 6: Final answer
   x = 1,511,871.09