Finding the Third Proportional to 673,689 and 1,440,726

Step by Step Solution

1. Step 1: Write the proportion equation
   673,689 : 1,440,726 = 1,440,726 : x
2. Step 2: Convert to fraction form
   673,689/1,440,726 = 1,440,726/x
3. Step 3: Cross multiply
   673,689x = 1,440,726 × 1,440,726
4. Step 4: Simplify right side
   673,689x = 2,075,691,407,076
5. Step 5: Solve for x
   x = 2,075,691,407,076/673,689
6. Step 6: Final answer
   x = 3,081,082.53