Finding the Third Proportional to 120,325.50 and 256,134

Step by Step Solution

1. Step 1: Write the proportion equation
   120,325.50 : 256,134 = 256,134 : x
2. Step 2: Convert to fraction form
   120,325.50/256,134 = 256,134/x
3. Step 3: Cross multiply
   120,325.50x = 256,134 × 256,134
4. Step 4: Simplify right side
   120,325.50x = 65,604,625,956
5. Step 5: Solve for x
   x = 65,604,625,956/120,325.50
6. Step 6: Final answer
   x = 545,226.29