Finding the Third Proportional to 172,472 and 370,144

Step by Step Solution

1. Step 1: Write the proportion equation
   172,472 : 370,144 = 370,144 : x
2. Step 2: Convert to fraction form
   172,472/370,144 = 370,144/x
3. Step 3: Cross multiply
   172,472x = 370,144 × 370,144
4. Step 4: Simplify right side
   172,472x = 137,006,580,736
5. Step 5: Solve for x
   x = 137,006,580,736/172,472
6. Step 6: Final answer
   x = 794,369.99