Finding the Third Proportional to 687,168 and 1,038,285

Step by Step Solution

1. Step 1: Write the proportion equation
   687,168 : 1,038,285 = 1,038,285 : x
2. Step 2: Convert to fraction form
   687,168/1,038,285 = 1,038,285/x
3. Step 3: Cross multiply
   687,168x = 1,038,285 × 1,038,285
4. Step 4: Simplify right side
   687,168x = 1,078,035,741,225
5. Step 5: Solve for x
   x = 1,078,035,741,225/687,168
6. Step 6: Final answer
   x = 1,568,809.58