Finding the Third Proportional to 216,522 and 472,392

Step by Step Solution

1. Step 1: Write the proportion equation
   216,522 : 472,392 = 472,392 : x
2. Step 2: Convert to fraction form
   216,522/472,392 = 472,392/x
3. Step 3: Cross multiply
   216,522x = 472,392 × 472,392
4. Step 4: Simplify right side
   216,522x = 223,154,201,664
5. Step 5: Solve for x
   x = 223,154,201,664/216,522
6. Step 6: Final answer
   x = 1,030,630.61