Finding the Third Proportional to 323,886 and 711,540

Step by Step Solution

1. Step 1: Write the proportion equation
   323,886 : 711,540 = 711,540 : x
2. Step 2: Convert to fraction form
   323,886/711,540 = 711,540/x
3. Step 3: Cross multiply
   323,886x = 711,540 × 711,540
4. Step 4: Simplify right side
   323,886x = 506,289,171,600
5. Step 5: Solve for x
   x = 506,289,171,600/323,886
6. Step 6: Final answer
   x = 1,563,170.90