Finding the Third Proportional to 686,731 and 1,010,249

Step by Step Solution

1. Step 1: Write the proportion equation
   686,731 : 1,010,249 = 1,010,249 : x
2. Step 2: Convert to fraction form
   686,731/1,010,249 = 1,010,249/x
3. Step 3: Cross multiply
   686,731x = 1,010,249 × 1,010,249
4. Step 4: Simplify right side
   686,731x = 1,020,603,042,001
5. Step 5: Solve for x
   x = 1,020,603,042,001/686,731
6. Step 6: Final answer
   x = 1,486,175.87