Finding the Third Proportional to 72,309 and 150,086.25

Step by Step Solution

1. Step 1: Write the proportion equation
   72,309 : 150,086.25 = 150,086.25 : x
2. Step 2: Convert to fraction form
   72,309/150,086.25 = 150,086.25/x
3. Step 3: Cross multiply
   72,309x = 150,086.25 × 150,086.25
4. Step 4: Simplify right side
   72,309x = 22,525,882,439.06
5. Step 5: Solve for x
   x = 22,525,882,439.06/72,309
6. Step 6: Final answer
   x = 311,522.53