Finding the Third Proportional to 217,122 and 471,380

Step by Step Solution

1. Step 1: Write the proportion equation
   217,122 : 471,380 = 471,380 : x
2. Step 2: Convert to fraction form
   217,122/471,380 = 471,380/x
3. Step 3: Cross multiply
   217,122x = 471,380 × 471,380
4. Step 4: Simplify right side
   217,122x = 222,199,104,400
5. Step 5: Solve for x
   x = 222,199,104,400/217,122
6. Step 6: Final answer
   x = 1,023,383.65