Finding the Third Proportional to 217,099.50 and 470,418

Step by Step Solution

1. Step 1: Write the proportion equation
   217,099.50 : 470,418 = 470,418 : x
2. Step 2: Convert to fraction form
   217,099.50/470,418 = 470,418/x
3. Step 3: Cross multiply
   217,099.50x = 470,418 × 470,418
4. Step 4: Simplify right side
   217,099.50x = 221,293,094,724
5. Step 5: Solve for x
   x = 221,293,094,724/217,099.50
6. Step 6: Final answer
   x = 1,019,316.46