Finding the Third Proportional to 86,129.50 and 182,684

Step by Step Solution

1. Step 1: Write the proportion equation
   86,129.50 : 182,684 = 182,684 : x
2. Step 2: Convert to fraction form
   86,129.50/182,684 = 182,684/x
3. Step 3: Cross multiply
   86,129.50x = 182,684 × 182,684
4. Step 4: Simplify right side
   86,129.50x = 33,373,443,856
5. Step 5: Solve for x
   x = 33,373,443,856/86,129.50
6. Step 6: Final answer
   x = 387,479.83