Finding the Third Proportional to 172,132 and 380,360

Step by Step Solution

1. Step 1: Write the proportion equation
   172,132 : 380,360 = 380,360 : x
2. Step 2: Convert to fraction form
   172,132/380,360 = 380,360/x
3. Step 3: Cross multiply
   172,132x = 380,360 × 380,360
4. Step 4: Simplify right side
   172,132x = 144,673,729,600
5. Step 5: Solve for x
   x = 144,673,729,600/172,132
6. Step 6: Final answer
   x = 840,481.31