Finding the Third Proportional to 39,290 and 72,835

Step by Step Solution

1. Step 1: Write the proportion equation
   39,290 : 72,835 = 72,835 : x
2. Step 2: Convert to fraction form
   39,290/72,835 = 72,835/x
3. Step 3: Cross multiply
   39,290x = 72,835 × 72,835
4. Step 4: Simplify right side
   39,290x = 5,304,937,225
5. Step 5: Solve for x
   x = 5,304,937,225/39,290
6. Step 6: Final answer
   x = 135,020.04