Finding the Third Proportional to 217,923 and 300,100.50

Step by Step Solution

1. Step 1: Write the proportion equation
   217,923 : 300,100.50 = 300,100.50 : x
2. Step 2: Convert to fraction form
   217,923/300,100.50 = 300,100.50/x
3. Step 3: Cross multiply
   217,923x = 300,100.50 × 300,100.50
4. Step 4: Simplify right side
   217,923x = 90,060,310,100.25
5. Step 5: Solve for x
   x = 90,060,310,100.25/217,923
6. Step 6: Final answer
   x = 413,266.66