Finding the Third Proportional to 188,640 and 410,016

Step by Step Solution

1. Step 1: Write the proportion equation
   188,640 : 410,016 = 410,016 : x
2. Step 2: Convert to fraction form
   188,640/410,016 = 410,016/x
3. Step 3: Cross multiply
   188,640x = 410,016 × 410,016
4. Step 4: Simplify right side
   188,640x = 168,113,120,256
5. Step 5: Solve for x
   x = 168,113,120,256/188,640
6. Step 6: Final answer
   x = 891,184.90