Finding the Third Proportional to 216,530 and 472,408

Step by Step Solution

1. Step 1: Write the proportion equation
   216,530 : 472,408 = 472,408 : x
2. Step 2: Convert to fraction form
   216,530/472,408 = 472,408/x
3. Step 3: Cross multiply
   216,530x = 472,408 × 472,408
4. Step 4: Simplify right side
   216,530x = 223,169,318,464
5. Step 5: Solve for x
   x = 223,169,318,464/216,530
6. Step 6: Final answer
   x = 1,030,662.35