Finding the Third Proportional to 178,429.50 and 262,713

Step by Step Solution

1. Step 1: Write the proportion equation
   178,429.50 : 262,713 = 262,713 : x
2. Step 2: Convert to fraction form
   178,429.50/262,713 = 262,713/x
3. Step 3: Cross multiply
   178,429.50x = 262,713 × 262,713
4. Step 4: Simplify right side
   178,429.50x = 69,018,120,369
5. Step 5: Solve for x
   x = 69,018,120,369/178,429.50
6. Step 6: Final answer
   x = 386,808.91