Finding the Third Proportional to 322,458 and 700,140

Step by Step Solution

1. Step 1: Write the proportion equation
   322,458 : 700,140 = 700,140 : x
2. Step 2: Convert to fraction form
   322,458/700,140 = 700,140/x
3. Step 3: Cross multiply
   322,458x = 700,140 × 700,140
4. Step 4: Simplify right side
   322,458x = 490,196,019,600
5. Step 5: Solve for x
   x = 490,196,019,600/322,458
6. Step 6: Final answer
   x = 1,520,185.64