Finding the Third Proportional to 297,884.25 and 638,410.50

Step by Step Solution

1. Step 1: Write the proportion equation
   297,884.25 : 638,410.50 = 638,410.50 : x
2. Step 2: Convert to fraction form
   297,884.25/638,410.50 = 638,410.50/x
3. Step 3: Cross multiply
   297,884.25x = 638,410.50 × 638,410.50
4. Step 4: Simplify right side
   297,884.25x = 407,567,966,510.25
5. Step 5: Solve for x
   x = 407,567,966,510.25/297,884.25
6. Step 6: Final answer
   x = 1,368,209.18