Finding the Third Proportional to 90,310 and 193,676

Step by Step Solution

1. Step 1: Write the proportion equation
   90,310 : 193,676 = 193,676 : x
2. Step 2: Convert to fraction form
   90,310/193,676 = 193,676/x
3. Step 3: Cross multiply
   90,310x = 193,676 × 193,676
4. Step 4: Simplify right side
   90,310x = 37,510,392,976
5. Step 5: Solve for x
   x = 37,510,392,976/90,310
6. Step 6: Final answer
   x = 415,351.49