Finding the Third Proportional to 505,728.56 and 711,397.69

Step by Step Solution

1. Step 1: Write the proportion equation
   505,728.56 : 711,397.69 = 711,397.69 : x
2. Step 2: Convert to fraction form
   505,728.56/711,397.69 = 711,397.69/x
3. Step 3: Cross multiply
   505,728.56x = 711,397.69 × 711,397.69
4. Step 4: Simplify right side
   505,728.56x = 506,086,669,780.35
5. Step 5: Solve for x
   x = 506,086,669,780.35/505,728.56
6. Step 6: Final answer
   x = 1,000,708.10