Finding the Third Proportional to 342,556 and 722,042

Step by Step Solution

1. Step 1: Write the proportion equation
   342,556 : 722,042 = 722,042 : x
2. Step 2: Convert to fraction form
   342,556/722,042 = 722,042/x
3. Step 3: Cross multiply
   342,556x = 722,042 × 722,042
4. Step 4: Simplify right side
   342,556x = 521,344,649,764
5. Step 5: Solve for x
   x = 521,344,649,764/342,556
6. Step 6: Final answer
   x = 1,521,925.32