Finding the Third Proportional to 297,075 and 641,499

Step by Step Solution

1. Step 1: Write the proportion equation
   297,075 : 641,499 = 641,499 : x
2. Step 2: Convert to fraction form
   297,075/641,499 = 641,499/x
3. Step 3: Cross multiply
   297,075x = 641,499 × 641,499
4. Step 4: Simplify right side
   297,075x = 411,520,967,001
5. Step 5: Solve for x
   x = 411,520,967,001/297,075
6. Step 6: Final answer
   x = 1,385,242.67