Finding the Third Proportional to 172,986 and 372,648

Step by Step Solution

1. Step 1: Write the proportion equation
   172,986 : 372,648 = 372,648 : x
2. Step 2: Convert to fraction form
   172,986/372,648 = 372,648/x
3. Step 3: Cross multiply
   172,986x = 372,648 × 372,648
4. Step 4: Simplify right side
   172,986x = 138,866,531,904
5. Step 5: Solve for x
   x = 138,866,531,904/172,986
6. Step 6: Final answer
   x = 802,761.68