Finding the Third Proportional to 276,858 and 395,902.69

Step by Step Solution

1. Step 1: Write the proportion equation
   276,858 : 395,902.69 = 395,902.69 : x
2. Step 2: Convert to fraction form
   276,858/395,902.69 = 395,902.69/x
3. Step 3: Cross multiply
   276,858x = 395,902.69 × 395,902.69
4. Step 4: Simplify right side
   276,858x = 156,738,937,969.72
5. Step 5: Solve for x
   x = 156,738,937,969.72/276,858
6. Step 6: Final answer
   x = 566,134.76