Finding the Third Proportional to 217,925 and 300,103

Step by Step Solution

1. Step 1: Write the proportion equation
   217,925 : 300,103 = 300,103 : x
2. Step 2: Convert to fraction form
   217,925/300,103 = 300,103/x
3. Step 3: Cross multiply
   217,925x = 300,103 × 300,103
4. Step 4: Simplify right side
   217,925x = 90,061,810,609
5. Step 5: Solve for x
   x = 90,061,810,609/217,925
6. Step 6: Final answer
   x = 413,269.75