Finding the Third Proportional to 172,536 and 375,446

Step by Step Solution

1. Step 1: Write the proportion equation
   172,536 : 375,446 = 375,446 : x
2. Step 2: Convert to fraction form
   172,536/375,446 = 375,446/x
3. Step 3: Cross multiply
   172,536x = 375,446 × 375,446
4. Step 4: Simplify right side
   172,536x = 140,959,698,916
5. Step 5: Solve for x
   x = 140,959,698,916/172,536
6. Step 6: Final answer
   x = 816,987.17