Finding the Third Proportional to 201,289.50 and 434,105

Step by Step Solution

1. Step 1: Write the proportion equation
   201,289.50 : 434,105 = 434,105 : x
2. Step 2: Convert to fraction form
   201,289.50/434,105 = 434,105/x
3. Step 3: Cross multiply
   201,289.50x = 434,105 × 434,105
4. Step 4: Simplify right side
   201,289.50x = 188,447,151,025
5. Step 5: Solve for x
   x = 188,447,151,025/201,289.50
6. Step 6: Final answer
   x = 936,199.61