Finding the Third Proportional to 151,290 and 200,688.75

Step by Step Solution

1. Step 1: Write the proportion equation
   151,290 : 200,688.75 = 200,688.75 : x
2. Step 2: Convert to fraction form
   151,290/200,688.75 = 200,688.75/x
3. Step 3: Cross multiply
   151,290x = 200,688.75 × 200,688.75
4. Step 4: Simplify right side
   151,290x = 40,275,974,376.56
5. Step 5: Solve for x
   x = 40,275,974,376.56/151,290
6. Step 6: Final answer
   x = 266,217.03