Finding the Third Proportional to 103,680 and 222,520

Step by Step Solution

1. Step 1: Write the proportion equation
   103,680 : 222,520 = 222,520 : x
2. Step 2: Convert to fraction form
   103,680/222,520 = 222,520/x
3. Step 3: Cross multiply
   103,680x = 222,520 × 222,520
4. Step 4: Simplify right side
   103,680x = 49,515,150,400
5. Step 5: Solve for x
   x = 49,515,150,400/103,680
6. Step 6: Final answer
   x = 477,576.68