Finding the Third Proportional to 356,626.50 and 769,428

Step by Step Solution

1. Step 1: Write the proportion equation
   356,626.50 : 769,428 = 769,428 : x
2. Step 2: Convert to fraction form
   356,626.50/769,428 = 769,428/x
3. Step 3: Cross multiply
   356,626.50x = 769,428 × 769,428
4. Step 4: Simplify right side
   356,626.50x = 592,019,447,184
5. Step 5: Solve for x
   x = 592,019,447,184/356,626.50
6. Step 6: Final answer
   x = 1,660,054.56