Finding the Third Proportional to 687,936 and 1,042,292

Step by Step Solution

1. Step 1: Write the proportion equation
   687,936 : 1,042,292 = 1,042,292 : x
2. Step 2: Convert to fraction form
   687,936/1,042,292 = 1,042,292/x
3. Step 3: Cross multiply
   687,936x = 1,042,292 × 1,042,292
4. Step 4: Simplify right side
   687,936x = 1,086,372,613,264
5. Step 5: Solve for x
   x = 1,086,372,613,264/687,936
6. Step 6: Final answer
   x = 1,579,176.86