Finding the Third Proportional to 42,775 and 67,190

Step by Step Solution

1. Step 1: Write the proportion equation
   42,775 : 67,190 = 67,190 : x
2. Step 2: Convert to fraction form
   42,775/67,190 = 67,190/x
3. Step 3: Cross multiply
   42,775x = 67,190 × 67,190
4. Step 4: Simplify right side
   42,775x = 4,514,496,100
5. Step 5: Solve for x
   x = 4,514,496,100/42,775
6. Step 6: Final answer
   x = 105,540.53