Finding the Third Proportional to 212,172 and 462,216

Step by Step Solution

1. Step 1: Write the proportion equation
   212,172 : 462,216 = 462,216 : x
2. Step 2: Convert to fraction form
   212,172/462,216 = 462,216/x
3. Step 3: Cross multiply
   212,172x = 462,216 × 462,216
4. Step 4: Simplify right side
   212,172x = 213,643,630,656
5. Step 5: Solve for x
   x = 213,643,630,656/212,172
6. Step 6: Final answer
   x = 1,006,936.03