Finding the Third Proportional to 188,810 and 410,490

Step by Step Solution

1. Step 1: Write the proportion equation
   188,810 : 410,490 = 410,490 : x
2. Step 2: Convert to fraction form
   188,810/410,490 = 410,490/x
3. Step 3: Cross multiply
   188,810x = 410,490 × 410,490
4. Step 4: Simplify right side
   188,810x = 168,502,040,100
5. Step 5: Solve for x
   x = 168,502,040,100/188,810
6. Step 6: Final answer
   x = 892,442.35