Finding the Third Proportional to 304,821 and 669,978

Step by Step Solution

1. Step 1: Write the proportion equation
   304,821 : 669,978 = 669,978 : x
2. Step 2: Convert to fraction form
   304,821/669,978 = 669,978/x
3. Step 3: Cross multiply
   304,821x = 669,978 × 669,978
4. Step 4: Simplify right side
   304,821x = 448,870,520,484
5. Step 5: Solve for x
   x = 448,870,520,484/304,821
6. Step 6: Final answer
   x = 1,472,570.85