Finding the Third Proportional to 269,247 and 422,404.50

Step by Step Solution

1. Step 1: Write the proportion equation
   269,247 : 422,404.50 = 422,404.50 : x
2. Step 2: Convert to fraction form
   269,247/422,404.50 = 422,404.50/x
3. Step 3: Cross multiply
   269,247x = 422,404.50 × 422,404.50
4. Step 4: Simplify right side
   269,247x = 178,425,561,620.25
5. Step 5: Solve for x
   x = 178,425,561,620.25/269,247
6. Step 6: Final answer
   x = 662,683.56