Finding the Third Proportional to 217,860 and 470,132

Step by Step Solution

1. Step 1: Write the proportion equation
   217,860 : 470,132 = 470,132 : x
2. Step 2: Convert to fraction form
   217,860/470,132 = 470,132/x
3. Step 3: Cross multiply
   217,860x = 470,132 × 470,132
4. Step 4: Simplify right side
   217,860x = 221,024,097,424
5. Step 5: Solve for x
   x = 221,024,097,424/217,860
6. Step 6: Final answer
   x = 1,014,523.54