Finding the Third Proportional to 454,156 and 687,522

Step by Step Solution

1. Step 1: Write the proportion equation
   454,156 : 687,522 = 687,522 : x
2. Step 2: Convert to fraction form
   454,156/687,522 = 687,522/x
3. Step 3: Cross multiply
   454,156x = 687,522 × 687,522
4. Step 4: Simplify right side
   454,156x = 472,686,500,484
5. Step 5: Solve for x
   x = 472,686,500,484/454,156
6. Step 6: Final answer
   x = 1,040,802.06