Finding the Third Proportional to 42,242 and 90,142

Step by Step Solution

1. Step 1: Write the proportion equation
   42,242 : 90,142 = 90,142 : x
2. Step 2: Convert to fraction form
   42,242/90,142 = 90,142/x
3. Step 3: Cross multiply
   42,242x = 90,142 × 90,142
4. Step 4: Simplify right side
   42,242x = 8,125,580,164
5. Step 5: Solve for x
   x = 8,125,580,164/42,242
6. Step 6: Final answer
   x = 192,357.85