Finding the Third Proportional to 686,908 and 1,010,499

Step by Step Solution

1. Step 1: Write the proportion equation
   686,908 : 1,010,499 = 1,010,499 : x
2. Step 2: Convert to fraction form
   686,908/1,010,499 = 1,010,499/x
3. Step 3: Cross multiply
   686,908x = 1,010,499 × 1,010,499
4. Step 4: Simplify right side
   686,908x = 1,021,108,229,001
5. Step 5: Solve for x
   x = 1,021,108,229,001/686,908
6. Step 6: Final answer
   x = 1,486,528.37