Finding the Third Proportional to 218,616 and 471,672

Step by Step Solution

1. Step 1: Write the proportion equation
   218,616 : 471,672 = 471,672 : x
2. Step 2: Convert to fraction form
   218,616/471,672 = 471,672/x
3. Step 3: Cross multiply
   218,616x = 471,672 × 471,672
4. Step 4: Simplify right side
   218,616x = 222,474,475,584
5. Step 5: Solve for x
   x = 222,474,475,584/218,616
6. Step 6: Final answer
   x = 1,017,649.56