Finding the Third Proportional to 128,007 and 201,082.50

Step by Step Solution

1. Step 1: Write the proportion equation
   128,007 : 201,082.50 = 201,082.50 : x
2. Step 2: Convert to fraction form
   128,007/201,082.50 = 201,082.50/x
3. Step 3: Cross multiply
   128,007x = 201,082.50 × 201,082.50
4. Step 4: Simplify right side
   128,007x = 40,434,171,806.25
5. Step 5: Solve for x
   x = 40,434,171,806.25/128,007
6. Step 6: Final answer
   x = 315,874.69