Finding the Third Proportional to 271,846.50 and 639,600

Step by Step Solution

1. Step 1: Write the proportion equation
   271,846.50 : 639,600 = 639,600 : x
2. Step 2: Convert to fraction form
   271,846.50/639,600 = 639,600/x
3. Step 3: Cross multiply
   271,846.50x = 639,600 × 639,600
4. Step 4: Simplify right side
   271,846.50x = 409,088,160,000
5. Step 5: Solve for x
   x = 409,088,160,000/271,846.50
6. Step 6: Final answer
   x = 1,504,849.83