Finding the Third Proportional to 212,772 and 315,050

Step by Step Solution

1. Step 1: Write the proportion equation
   212,772 : 315,050 = 315,050 : x
2. Step 2: Convert to fraction form
   212,772/315,050 = 315,050/x
3. Step 3: Cross multiply
   212,772x = 315,050 × 315,050
4. Step 4: Simplify right side
   212,772x = 99,256,502,500
5. Step 5: Solve for x
   x = 99,256,502,500/212,772
6. Step 6: Final answer
   x = 466,492.31