Finding the Third Proportional to 686,761 and 1,010,288

Step by Step Solution

1. Step 1: Write the proportion equation
   686,761 : 1,010,288 = 1,010,288 : x
2. Step 2: Convert to fraction form
   686,761/1,010,288 = 1,010,288/x
3. Step 3: Cross multiply
   686,761x = 1,010,288 × 1,010,288
4. Step 4: Simplify right side
   686,761x = 1,020,681,842,944
5. Step 5: Solve for x
   x = 1,020,681,842,944/686,761
6. Step 6: Final answer
   x = 1,486,225.69