Finding the Third Proportional to 325,405 and 700,817.50

Step by Step Solution

1. Step 1: Write the proportion equation
   325,405 : 700,817.50 = 700,817.50 : x
2. Step 2: Convert to fraction form
   325,405/700,817.50 = 700,817.50/x
3. Step 3: Cross multiply
   325,405x = 700,817.50 × 700,817.50
4. Step 4: Simplify right side
   325,405x = 491,145,168,306.25
5. Step 5: Solve for x
   x = 491,145,168,306.25/325,405
6. Step 6: Final answer
   x = 1,509,335.04