Finding the Third Proportional to 171,409.50 and 363,555

Step by Step Solution

1. Step 1: Write the proportion equation
   171,409.50 : 363,555 = 363,555 : x
2. Step 2: Convert to fraction form
   171,409.50/363,555 = 363,555/x
3. Step 3: Cross multiply
   171,409.50x = 363,555 × 363,555
4. Step 4: Simplify right side
   171,409.50x = 132,172,238,025
5. Step 5: Solve for x
   x = 132,172,238,025/171,409.50
6. Step 6: Final answer
   x = 771,090.51