Finding the Third Proportional to 297,166.50 and 648,495

Step by Step Solution

1. Step 1: Write the proportion equation
   297,166.50 : 648,495 = 648,495 : x
2. Step 2: Convert to fraction form
   297,166.50/648,495 = 648,495/x
3. Step 3: Cross multiply
   297,166.50x = 648,495 × 648,495
4. Step 4: Simplify right side
   297,166.50x = 420,545,765,025
5. Step 5: Solve for x
   x = 420,545,765,025/297,166.50
6. Step 6: Final answer
   x = 1,415,185.65