Finding the Third Proportional to 686,845 and 1,009,686

Step by Step Solution

1. Step 1: Write the proportion equation
   686,845 : 1,009,686 = 1,009,686 : x
2. Step 2: Convert to fraction form
   686,845/1,009,686 = 1,009,686/x
3. Step 3: Cross multiply
   686,845x = 1,009,686 × 1,009,686
4. Step 4: Simplify right side
   686,845x = 1,019,465,818,596
5. Step 5: Solve for x
   x = 1,019,465,818,596/686,845
6. Step 6: Final answer
   x = 1,484,273.48