Finding the Third Proportional to 353,104.50 and 522,789

Step by Step Solution

1. Step 1: Write the proportion equation
   353,104.50 : 522,789 = 522,789 : x
2. Step 2: Convert to fraction form
   353,104.50/522,789 = 522,789/x
3. Step 3: Cross multiply
   353,104.50x = 522,789 × 522,789
4. Step 4: Simplify right side
   353,104.50x = 273,308,338,521
5. Step 5: Solve for x
   x = 273,308,338,521/353,104.50
6. Step 6: Final answer
   x = 774,015.45