Finding the Third Proportional to 163,993.50 and 356,418

Step by Step Solution

1. Step 1: Write the proportion equation
   163,993.50 : 356,418 = 356,418 : x
2. Step 2: Convert to fraction form
   163,993.50/356,418 = 356,418/x
3. Step 3: Cross multiply
   163,993.50x = 356,418 × 356,418
4. Step 4: Simplify right side
   163,993.50x = 127,033,790,724
5. Step 5: Solve for x
   x = 127,033,790,724/163,993.50
6. Step 6: Final answer
   x = 774,626.99