Finding the Third Proportional to 128,095.50 and 204,636

Step by Step Solution

1. Step 1: Write the proportion equation
   128,095.50 : 204,636 = 204,636 : x
2. Step 2: Convert to fraction form
   128,095.50/204,636 = 204,636/x
3. Step 3: Cross multiply
   128,095.50x = 204,636 × 204,636
4. Step 4: Simplify right side
   128,095.50x = 41,875,892,496
5. Step 5: Solve for x
   x = 41,875,892,496/128,095.50
6. Step 6: Final answer
   x = 326,911.50