Finding the Third Proportional to 686,600 and 1,435,976

Step by Step Solution

1. Step 1: Write the proportion equation
   686,600 : 1,435,976 = 1,435,976 : x
2. Step 2: Convert to fraction form
   686,600/1,435,976 = 1,435,976/x
3. Step 3: Cross multiply
   686,600x = 1,435,976 × 1,435,976
4. Step 4: Simplify right side
   686,600x = 2,062,027,072,576
5. Step 5: Solve for x
   x = 2,062,027,072,576/686,600
6. Step 6: Final answer
   x = 3,003,243.62