Finding the Third Proportional to 686,888 and 1,009,766

Step by Step Solution

1. Step 1: Write the proportion equation
   686,888 : 1,009,766 = 1,009,766 : x
2. Step 2: Convert to fraction form
   686,888/1,009,766 = 1,009,766/x
3. Step 3: Cross multiply
   686,888x = 1,009,766 × 1,009,766
4. Step 4: Simplify right side
   686,888x = 1,019,627,374,756
5. Step 5: Solve for x
   x = 1,019,627,374,756/686,888
6. Step 6: Final answer
   x = 1,484,415.76