Finding the Third Proportional to 276,645 and 603,559.50

Step by Step Solution

1. Step 1: Write the proportion equation
   276,645 : 603,559.50 = 603,559.50 : x
2. Step 2: Convert to fraction form
   276,645/603,559.50 = 603,559.50/x
3. Step 3: Cross multiply
   276,645x = 603,559.50 × 603,559.50
4. Step 4: Simplify right side
   276,645x = 364,284,070,040.25
5. Step 5: Solve for x
   x = 364,284,070,040.25/276,645
6. Step 6: Final answer
   x = 1,316,792.53