Finding the Third Proportional to 270,964.50 and 381,240

Step by Step Solution

1. Step 1: Write the proportion equation
   270,964.50 : 381,240 = 381,240 : x
2. Step 2: Convert to fraction form
   270,964.50/381,240 = 381,240/x
3. Step 3: Cross multiply
   270,964.50x = 381,240 × 381,240
4. Step 4: Simplify right side
   270,964.50x = 145,343,937,600
5. Step 5: Solve for x
   x = 145,343,937,600/270,964.50
6. Step 6: Final answer
   x = 536,394.76