Finding the Third Proportional to 103,290 and 223,948

Step by Step Solution

1. Step 1: Write the proportion equation
   103,290 : 223,948 = 223,948 : x
2. Step 2: Convert to fraction form
   103,290/223,948 = 223,948/x
3. Step 3: Cross multiply
   103,290x = 223,948 × 223,948
4. Step 4: Simplify right side
   103,290x = 50,152,706,704
5. Step 5: Solve for x
   x = 50,152,706,704/103,290
6. Step 6: Final answer
   x = 485,552.39