Finding the Third Proportional to 275,134.50 and 415,476

Step by Step Solution

1. Step 1: Write the proportion equation
   275,134.50 : 415,476 = 415,476 : x
2. Step 2: Convert to fraction form
   275,134.50/415,476 = 415,476/x
3. Step 3: Cross multiply
   275,134.50x = 415,476 × 415,476
4. Step 4: Simplify right side
   275,134.50x = 172,620,306,576
5. Step 5: Solve for x
   x = 172,620,306,576/275,134.50
6. Step 6: Final answer
   x = 627,403.35