Finding the Third Proportional to 686,929 and 1,010,517

Step by Step Solution

1. Step 1: Write the proportion equation
   686,929 : 1,010,517 = 1,010,517 : x
2. Step 2: Convert to fraction form
   686,929/1,010,517 = 1,010,517/x
3. Step 3: Cross multiply
   686,929x = 1,010,517 × 1,010,517
4. Step 4: Simplify right side
   686,929x = 1,021,144,607,289
5. Step 5: Solve for x
   x = 1,021,144,607,289/686,929
6. Step 6: Final answer
   x = 1,486,535.88