Finding the Third Proportional to 37,287 and 72,683

Step by Step Solution

1. Step 1: Write the proportion equation
   37,287 : 72,683 = 72,683 : x
2. Step 2: Convert to fraction form
   37,287/72,683 = 72,683/x
3. Step 3: Cross multiply
   37,287x = 72,683 × 72,683
4. Step 4: Simplify right side
   37,287x = 5,282,818,489
5. Step 5: Solve for x
   x = 5,282,818,489/37,287
6. Step 6: Final answer
   x = 141,679.90