Finding the Third Proportional to 297,022.50 and 638,807.06

Step by Step Solution

1. Step 1: Write the proportion equation
   297,022.50 : 638,807.06 = 638,807.06 : x
2. Step 2: Convert to fraction form
   297,022.50/638,807.06 = 638,807.06/x
3. Step 3: Cross multiply
   297,022.50x = 638,807.06 × 638,807.06
4. Step 4: Simplify right side
   297,022.50x = 408,074,463,099.88
5. Step 5: Solve for x
   x = 408,074,463,099.88/297,022.50
6. Step 6: Final answer
   x = 1,373,884.01