Finding the Third Proportional to 34,405.50 and 71,931.75

Step by Step Solution

1. Step 1: Write the proportion equation
   34,405.50 : 71,931.75 = 71,931.75 : x
2. Step 2: Convert to fraction form
   34,405.50/71,931.75 = 71,931.75/x
3. Step 3: Cross multiply
   34,405.50x = 71,931.75 × 71,931.75
4. Step 4: Simplify right side
   34,405.50x = 5,174,176,658.06
5. Step 5: Solve for x
   x = 5,174,176,658.06/34,405.50
6. Step 6: Final answer
   x = 150,388.07