Finding the Third Proportional to 217,818 and 469,012

Step by Step Solution

1. Step 1: Write the proportion equation
   217,818 : 469,012 = 469,012 : x
2. Step 2: Convert to fraction form
   217,818/469,012 = 469,012/x
3. Step 3: Cross multiply
   217,818x = 469,012 × 469,012
4. Step 4: Simplify right side
   217,818x = 219,972,256,144
5. Step 5: Solve for x
   x = 219,972,256,144/217,818
6. Step 6: Final answer
   x = 1,009,890.17