Finding the Third Proportional to 687,991 and 1,011,764

Step by Step Solution

1. Step 1: Write the proportion equation
   687,991 : 1,011,764 = 1,011,764 : x
2. Step 2: Convert to fraction form
   687,991/1,011,764 = 1,011,764/x
3. Step 3: Cross multiply
   687,991x = 1,011,764 × 1,011,764
4. Step 4: Simplify right side
   687,991x = 1,023,666,391,696
5. Step 5: Solve for x
   x = 1,023,666,391,696/687,991
6. Step 6: Final answer
   x = 1,487,906.66