Finding the Third Proportional to 686,774 and 1,010,299

Step by Step Solution

1. Step 1: Write the proportion equation
   686,774 : 1,010,299 = 1,010,299 : x
2. Step 2: Convert to fraction form
   686,774/1,010,299 = 1,010,299/x
3. Step 3: Cross multiply
   686,774x = 1,010,299 × 1,010,299
4. Step 4: Simplify right side
   686,774x = 1,020,704,069,401
5. Step 5: Solve for x
   x = 1,020,704,069,401/686,774
6. Step 6: Final answer
   x = 1,486,229.92