Finding the Third Proportional to 686,622 and 1,005,353

Step by Step Solution

1. Step 1: Write the proportion equation
   686,622 : 1,005,353 = 1,005,353 : x
2. Step 2: Convert to fraction form
   686,622/1,005,353 = 1,005,353/x
3. Step 3: Cross multiply
   686,622x = 1,005,353 × 1,005,353
4. Step 4: Simplify right side
   686,622x = 1,010,734,654,609
5. Step 5: Solve for x
   x = 1,010,734,654,609/686,622
6. Step 6: Final answer
   x = 1,472,039.43