Finding the Third Proportional to 296,886 and 647,054

Step by Step Solution

1. Step 1: Write the proportion equation
   296,886 : 647,054 = 647,054 : x
2. Step 2: Convert to fraction form
   296,886/647,054 = 647,054/x
3. Step 3: Cross multiply
   296,886x = 647,054 × 647,054
4. Step 4: Simplify right side
   296,886x = 418,678,878,916
5. Step 5: Solve for x
   x = 418,678,878,916/296,886
6. Step 6: Final answer
   x = 1,410,234.50