Finding the Third Proportional to 33,139 and 72,109

Step by Step Solution

1. Step 1: Write the proportion equation
   33,139 : 72,109 = 72,109 : x
2. Step 2: Convert to fraction form
   33,139/72,109 = 72,109/x
3. Step 3: Cross multiply
   33,139x = 72,109 × 72,109
4. Step 4: Simplify right side
   33,139x = 5,199,707,881
5. Step 5: Solve for x
   x = 5,199,707,881/33,139
6. Step 6: Final answer
   x = 156,906.00