Finding the Third Proportional to 787,724 and 1,687,544

Step by Step Solution

1. Step 1: Write the proportion equation
   787,724 : 1,687,544 = 1,687,544 : x
2. Step 2: Convert to fraction form
   787,724/1,687,544 = 1,687,544/x
3. Step 3: Cross multiply
   787,724x = 1,687,544 × 1,687,544
4. Step 4: Simplify right side
   787,724x = 2,847,804,751,936
5. Step 5: Solve for x
   x = 2,847,804,751,936/787,724
6. Step 6: Final answer
   x = 3,615,231.67