Finding the Third Proportional to 162,060 and 256,408.50

Step by Step Solution

1. Step 1: Write the proportion equation
   162,060 : 256,408.50 = 256,408.50 : x
2. Step 2: Convert to fraction form
   162,060/256,408.50 = 256,408.50/x
3. Step 3: Cross multiply
   162,060x = 256,408.50 × 256,408.50
4. Step 4: Simplify right side
   162,060x = 65,745,318,872.25
5. Step 5: Solve for x
   x = 65,745,318,872.25/162,060
6. Step 6: Final answer
   x = 405,685.05