Finding the Third Proportional to 172,042 and 253,003

Step by Step Solution

1. Step 1: Write the proportion equation
   172,042 : 253,003 = 253,003 : x
2. Step 2: Convert to fraction form
   172,042/253,003 = 253,003/x
3. Step 3: Cross multiply
   172,042x = 253,003 × 253,003
4. Step 4: Simplify right side
   172,042x = 64,010,518,009
5. Step 5: Solve for x
   x = 64,010,518,009/172,042
6. Step 6: Final answer
   x = 372,063.32