Finding the Third Proportional to 686,778 and 1,010,304

Step by Step Solution

1. Step 1: Write the proportion equation
   686,778 : 1,010,304 = 1,010,304 : x
2. Step 2: Convert to fraction form
   686,778/1,010,304 = 1,010,304/x
3. Step 3: Cross multiply
   686,778x = 1,010,304 × 1,010,304
4. Step 4: Simplify right side
   686,778x = 1,020,714,172,416
5. Step 5: Solve for x
   x = 1,020,714,172,416/686,778
6. Step 6: Final answer
   x = 1,486,235.98