Finding the Third Proportional to 19,790.50 and 42,176

Step by Step Solution

1. Step 1: Write the proportion equation
   19,790.50 : 42,176 = 42,176 : x
2. Step 2: Convert to fraction form
   19,790.50/42,176 = 42,176/x
3. Step 3: Cross multiply
   19,790.50x = 42,176 × 42,176
4. Step 4: Simplify right side
   19,790.50x = 1,778,814,976
5. Step 5: Solve for x
   x = 1,778,814,976/19,790.50
6. Step 6: Final answer
   x = 89,882.27