Finding the Third Proportional to 90,031.50 and 160,218

Step by Step Solution

1. Step 1: Write the proportion equation
   90,031.50 : 160,218 = 160,218 : x
2. Step 2: Convert to fraction form
   90,031.50/160,218 = 160,218/x
3. Step 3: Cross multiply
   90,031.50x = 160,218 × 160,218
4. Step 4: Simplify right side
   90,031.50x = 25,669,807,524
5. Step 5: Solve for x
   x = 25,669,807,524/90,031.50
6. Step 6: Final answer
   x = 285,120.29