Finding the Third Proportional to 172,401.75 and 365,328

Step by Step Solution

1. Step 1: Write the proportion equation
   172,401.75 : 365,328 = 365,328 : x
2. Step 2: Convert to fraction form
   172,401.75/365,328 = 365,328/x
3. Step 3: Cross multiply
   172,401.75x = 365,328 × 365,328
4. Step 4: Simplify right side
   172,401.75x = 133,464,547,584
5. Step 5: Solve for x
   x = 133,464,547,584/172,401.75
6. Step 6: Final answer
   x = 774,148.45