Finding the Third Proportional to 172,542 and 371,308

Step by Step Solution

1. Step 1: Write the proportion equation
   172,542 : 371,308 = 371,308 : x
2. Step 2: Convert to fraction form
   172,542/371,308 = 371,308/x
3. Step 3: Cross multiply
   172,542x = 371,308 × 371,308
4. Step 4: Simplify right side
   172,542x = 137,869,630,864
5. Step 5: Solve for x
   x = 137,869,630,864/172,542
6. Step 6: Final answer
   x = 799,049.69