Finding the Third Proportional to 276,084 and 405,030

Step by Step Solution

1. Step 1: Write the proportion equation
   276,084 : 405,030 = 405,030 : x
2. Step 2: Convert to fraction form
   276,084/405,030 = 405,030/x
3. Step 3: Cross multiply
   276,084x = 405,030 × 405,030
4. Step 4: Simplify right side
   276,084x = 164,049,300,900
5. Step 5: Solve for x
   x = 164,049,300,900/276,084
6. Step 6: Final answer
   x = 594,200.68