Finding the Third Proportional to 686,749 and 1,010,268

Step by Step Solution

1. Step 1: Write the proportion equation
   686,749 : 1,010,268 = 1,010,268 : x
2. Step 2: Convert to fraction form
   686,749/1,010,268 = 1,010,268/x
3. Step 3: Cross multiply
   686,749x = 1,010,268 × 1,010,268
4. Step 4: Simplify right side
   686,749x = 1,020,641,431,824
5. Step 5: Solve for x
   x = 1,020,641,431,824/686,749
6. Step 6: Final answer
   x = 1,486,192.82