Finding the Third Proportional to 276,918 and 605,089.50

Step by Step Solution

1. Step 1: Write the proportion equation
   276,918 : 605,089.50 = 605,089.50 : x
2. Step 2: Convert to fraction form
   276,918/605,089.50 = 605,089.50/x
3. Step 3: Cross multiply
   276,918x = 605,089.50 × 605,089.50
4. Step 4: Simplify right side
   276,918x = 366,133,303,010.25
5. Step 5: Solve for x
   x = 366,133,303,010.25/276,918
6. Step 6: Final answer
   x = 1,322,172.28