Finding the Third Proportional to 603,715.50 and 1,257,039

Step by Step Solution

1. Step 1: Write the proportion equation
   603,715.50 : 1,257,039 = 1,257,039 : x
2. Step 2: Convert to fraction form
   603,715.50/1,257,039 = 1,257,039/x
3. Step 3: Cross multiply
   603,715.50x = 1,257,039 × 1,257,039
4. Step 4: Simplify right side
   603,715.50x = 1,580,147,047,521
5. Step 5: Solve for x
   x = 1,580,147,047,521/603,715.50
6. Step 6: Final answer
   x = 2,617,370.35