Finding the Third Proportional to 87,667.50 and 189,349.50

Step by Step Solution

1. Step 1: Write the proportion equation
   87,667.50 : 189,349.50 = 189,349.50 : x
2. Step 2: Convert to fraction form
   87,667.50/189,349.50 = 189,349.50/x
3. Step 3: Cross multiply
   87,667.50x = 189,349.50 × 189,349.50
4. Step 4: Simplify right side
   87,667.50x = 35,853,233,150.25
5. Step 5: Solve for x
   x = 35,853,233,150.25/87,667.50
6. Step 6: Final answer
   x = 408,968.35