Finding the Third Proportional to 42,042 and 87,981

Step by Step Solution

1. Step 1: Write the proportion equation
   42,042 : 87,981 = 87,981 : x
2. Step 2: Convert to fraction form
   42,042/87,981 = 87,981/x
3. Step 3: Cross multiply
   42,042x = 87,981 × 87,981
4. Step 4: Simplify right side
   42,042x = 7,740,656,361
5. Step 5: Solve for x
   x = 7,740,656,361/42,042
6. Step 6: Final answer
   x = 184,117.22