Finding the Third Proportional to 685,484 and 1,067,268

Step by Step Solution

1. Step 1: Write the proportion equation
   685,484 : 1,067,268 = 1,067,268 : x
2. Step 2: Convert to fraction form
   685,484/1,067,268 = 1,067,268/x
3. Step 3: Cross multiply
   685,484x = 1,067,268 × 1,067,268
4. Step 4: Simplify right side
   685,484x = 1,139,060,983,824
5. Step 5: Solve for x
   x = 1,139,060,983,824/685,484
6. Step 6: Final answer
   x = 1,661,688.65