Finding the Third Proportional to 458,409 and 700,789.50

Step by Step Solution

1. Step 1: Write the proportion equation
   458,409 : 700,789.50 = 700,789.50 : x
2. Step 2: Convert to fraction form
   458,409/700,789.50 = 700,789.50/x
3. Step 3: Cross multiply
   458,409x = 700,789.50 × 700,789.50
4. Step 4: Simplify right side
   458,409x = 491,105,923,310.25
5. Step 5: Solve for x
   x = 491,105,923,310.25/458,409
6. Step 6: Final answer
   x = 1,071,326.97