Finding the Third Proportional to 321,454 and 700,055

Step by Step Solution

1. Step 1: Write the proportion equation
   321,454 : 700,055 = 700,055 : x
2. Step 2: Convert to fraction form
   321,454/700,055 = 700,055/x
3. Step 3: Cross multiply
   321,454x = 700,055 × 700,055
4. Step 4: Simplify right side
   321,454x = 490,077,003,025
5. Step 5: Solve for x
   x = 490,077,003,025/321,454
6. Step 6: Final answer
   x = 1,524,563.40