Finding the Third Proportional to 172,927.50 and 378,660

Step by Step Solution

1. Step 1: Write the proportion equation
   172,927.50 : 378,660 = 378,660 : x
2. Step 2: Convert to fraction form
   172,927.50/378,660 = 378,660/x
3. Step 3: Cross multiply
   172,927.50x = 378,660 × 378,660
4. Step 4: Simplify right side
   172,927.50x = 143,383,395,600
5. Step 5: Solve for x
   x = 143,383,395,600/172,927.50
6. Step 6: Final answer
   x = 829,153.23