Finding the Third Proportional to 214,440.50 and 315,422

Step by Step Solution

1. Step 1: Write the proportion equation
   214,440.50 : 315,422 = 315,422 : x
2. Step 2: Convert to fraction form
   214,440.50/315,422 = 315,422/x
3. Step 3: Cross multiply
   214,440.50x = 315,422 × 315,422
4. Step 4: Simplify right side
   214,440.50x = 99,491,038,084
5. Step 5: Solve for x
   x = 99,491,038,084/214,440.50
6. Step 6: Final answer
   x = 463,956.38