Finding the Third Proportional to 316,411.50 and 682,548

Step by Step Solution

1. Step 1: Write the proportion equation
   316,411.50 : 682,548 = 682,548 : x
2. Step 2: Convert to fraction form
   316,411.50/682,548 = 682,548/x
3. Step 3: Cross multiply
   316,411.50x = 682,548 × 682,548
4. Step 4: Simplify right side
   316,411.50x = 465,871,772,304
5. Step 5: Solve for x
   x = 465,871,772,304/316,411.50
6. Step 6: Final answer
   x = 1,472,360.43