Finding the Third Proportional to 89,482 and 188,172

Step by Step Solution

1. Step 1: Write the proportion equation
   89,482 : 188,172 = 188,172 : x
2. Step 2: Convert to fraction form
   89,482/188,172 = 188,172/x
3. Step 3: Cross multiply
   89,482x = 188,172 × 188,172
4. Step 4: Simplify right side
   89,482x = 35,408,701,584
5. Step 5: Solve for x
   x = 35,408,701,584/89,482
6. Step 6: Final answer
   x = 395,707.53