Finding the Third Proportional to 172,855.50 and 375,231

Step by Step Solution

1. Step 1: Write the proportion equation
   172,855.50 : 375,231 = 375,231 : x
2. Step 2: Convert to fraction form
   172,855.50/375,231 = 375,231/x
3. Step 3: Cross multiply
   172,855.50x = 375,231 × 375,231
4. Step 4: Simplify right side
   172,855.50x = 140,798,303,361
5. Step 5: Solve for x
   x = 140,798,303,361/172,855.50
6. Step 6: Final answer
   x = 814,543.38