Finding the Third Proportional to 360,558 and 769,384.50

Step by Step Solution

1. Step 1: Write the proportion equation
   360,558 : 769,384.50 = 769,384.50 : x
2. Step 2: Convert to fraction form
   360,558/769,384.50 = 769,384.50/x
3. Step 3: Cross multiply
   360,558x = 769,384.50 × 769,384.50
4. Step 4: Simplify right side
   360,558x = 591,952,508,840.25
5. Step 5: Solve for x
   x = 591,952,508,840.25/360,558
6. Step 6: Final answer
   x = 1,641,767.78