Finding the Third Proportional to 344,034 and 521,242

Step by Step Solution

1. Step 1: Write the proportion equation
   344,034 : 521,242 = 521,242 : x
2. Step 2: Convert to fraction form
   344,034/521,242 = 521,242/x
3. Step 3: Cross multiply
   344,034x = 521,242 × 521,242
4. Step 4: Simplify right side
   344,034x = 271,693,222,564
5. Step 5: Solve for x
   x = 271,693,222,564/344,034
6. Step 6: Final answer
   x = 789,727.83