Finding the Third Proportional to 89,719 and 188,738

Step by Step Solution

1. Step 1: Write the proportion equation
   89,719 : 188,738 = 188,738 : x
2. Step 2: Convert to fraction form
   89,719/188,738 = 188,738/x
3. Step 3: Cross multiply
   89,719x = 188,738 × 188,738
4. Step 4: Simplify right side
   89,719x = 35,622,032,644
5. Step 5: Solve for x
   x = 35,622,032,644/89,719
6. Step 6: Final answer
   x = 397,040.01