Finding the Third Proportional to 179,931 and 387,105

Step by Step Solution

1. Step 1: Write the proportion equation
   179,931 : 387,105 = 387,105 : x
2. Step 2: Convert to fraction form
   179,931/387,105 = 387,105/x
3. Step 3: Cross multiply
   179,931x = 387,105 × 387,105
4. Step 4: Simplify right side
   179,931x = 149,850,281,025
5. Step 5: Solve for x
   x = 149,850,281,025/179,931
6. Step 6: Final answer
   x = 832,820.81