Finding the Third Proportional to 336,458.81 and 479,899.69

Step by Step Solution

1. Step 1: Write the proportion equation
   336,458.81 : 479,899.69 = 479,899.69 : x
2. Step 2: Convert to fraction form
   336,458.81/479,899.69 = 479,899.69/x
3. Step 3: Cross multiply
   336,458.81x = 479,899.69 × 479,899.69
4. Step 4: Simplify right side
   336,458.81x = 230,303,710,062.60
5. Step 5: Solve for x
   x = 230,303,710,062.60/336,458.81
6. Step 6: Final answer
   x = 684,493.02