Finding the Third Proportional to 296,872.50 and 647,028

Step by Step Solution

1. Step 1: Write the proportion equation
   296,872.50 : 647,028 = 647,028 : x
2. Step 2: Convert to fraction form
   296,872.50/647,028 = 647,028/x
3. Step 3: Cross multiply
   296,872.50x = 647,028 × 647,028
4. Step 4: Simplify right side
   296,872.50x = 418,645,232,784
5. Step 5: Solve for x
   x = 418,645,232,784/296,872.50
6. Step 6: Final answer
   x = 1,410,185.29