Finding the Third Proportional to 172,206 and 364,898.25

Step by Step Solution

1. Step 1: Write the proportion equation
   172,206 : 364,898.25 = 364,898.25 : x
2. Step 2: Convert to fraction form
   172,206/364,898.25 = 364,898.25/x
3. Step 3: Cross multiply
   172,206x = 364,898.25 × 364,898.25
4. Step 4: Simplify right side
   172,206x = 133,150,732,853.06
5. Step 5: Solve for x
   x = 133,150,732,853.06/172,206
6. Step 6: Final answer
   x = 773,206.12