Finding the Third Proportional to 172,131.75 and 372,870

Step by Step Solution

1. Step 1: Write the proportion equation
   172,131.75 : 372,870 = 372,870 : x
2. Step 2: Convert to fraction form
   172,131.75/372,870 = 372,870/x
3. Step 3: Cross multiply
   172,131.75x = 372,870 × 372,870
4. Step 4: Simplify right side
   172,131.75x = 139,032,036,900
5. Step 5: Solve for x
   x = 139,032,036,900/172,131.75
6. Step 6: Final answer
   x = 807,707.10