Finding the Third Proportional to 321,435 and 700,015.50

Step by Step Solution

1. Step 1: Write the proportion equation
   321,435 : 700,015.50 = 700,015.50 : x
2. Step 2: Convert to fraction form
   321,435/700,015.50 = 700,015.50/x
3. Step 3: Cross multiply
   321,435x = 700,015.50 × 700,015.50
4. Step 4: Simplify right side
   321,435x = 490,021,700,240.25
5. Step 5: Solve for x
   x = 490,021,700,240.25/321,435
6. Step 6: Final answer
   x = 1,524,481.47