Finding the Third Proportional to 342,992 and 743,008

Step by Step Solution

1. Step 1: Write the proportion equation
   342,992 : 743,008 = 743,008 : x
2. Step 2: Convert to fraction form
   342,992/743,008 = 743,008/x
3. Step 3: Cross multiply
   342,992x = 743,008 × 743,008
4. Step 4: Simplify right side
   342,992x = 552,060,888,064
5. Step 5: Solve for x
   x = 552,060,888,064/342,992
6. Step 6: Final answer
   x = 1,609,544.50