Finding the Third Proportional to 172,014 and 388,624

Step by Step Solution

1. Step 1: Write the proportion equation
   172,014 : 388,624 = 388,624 : x
2. Step 2: Convert to fraction form
   172,014/388,624 = 388,624/x
3. Step 3: Cross multiply
   172,014x = 388,624 × 388,624
4. Step 4: Simplify right side
   172,014x = 151,028,613,376
5. Step 5: Solve for x
   x = 151,028,613,376/172,014
6. Step 6: Final answer
   x = 878,001.87