Finding the Third Proportional to 34,009.50 and 72,136.50

Step by Step Solution

1. Step 1: Write the proportion equation
   34,009.50 : 72,136.50 = 72,136.50 : x
2. Step 2: Convert to fraction form
   34,009.50/72,136.50 = 72,136.50/x
3. Step 3: Cross multiply
   34,009.50x = 72,136.50 × 72,136.50
4. Step 4: Simplify right side
   34,009.50x = 5,203,674,632.25
5. Step 5: Solve for x
   x = 5,203,674,632.25/34,009.50
6. Step 6: Final answer
   x = 153,006.50