Finding the Third Proportional to 686,525 and 1,435,789

Step by Step Solution

1. Step 1: Write the proportion equation
   686,525 : 1,435,789 = 1,435,789 : x
2. Step 2: Convert to fraction form
   686,525/1,435,789 = 1,435,789/x
3. Step 3: Cross multiply
   686,525x = 1,435,789 × 1,435,789
4. Step 4: Simplify right side
   686,525x = 2,061,490,052,521
5. Step 5: Solve for x
   x = 2,061,490,052,521/686,525
6. Step 6: Final answer
   x = 3,002,789.49