Finding the Third Proportional to 269,246 and 422,404

Step by Step Solution

1. Step 1: Write the proportion equation
   269,246 : 422,404 = 422,404 : x
2. Step 2: Convert to fraction form
   269,246/422,404 = 422,404/x
3. Step 3: Cross multiply
   269,246x = 422,404 × 422,404
4. Step 4: Simplify right side
   269,246x = 178,425,139,216
5. Step 5: Solve for x
   x = 178,425,139,216/269,246
6. Step 6: Final answer
   x = 662,684.46