Finding the Third Proportional to 78,732 and 172,044

Step by Step Solution

1. Step 1: Write the proportion equation
   78,732 : 172,044 = 172,044 : x
2. Step 2: Convert to fraction form
   78,732/172,044 = 172,044/x
3. Step 3: Cross multiply
   78,732x = 172,044 × 172,044
4. Step 4: Simplify right side
   78,732x = 29,599,137,936
5. Step 5: Solve for x
   x = 29,599,137,936/78,732
6. Step 6: Final answer
   x = 375,948