Finding the Third Proportional to 223,812 and 318,667.50

Step by Step Solution

1. Step 1: Write the proportion equation
   223,812 : 318,667.50 = 318,667.50 : x
2. Step 2: Convert to fraction form
   223,812/318,667.50 = 318,667.50/x
3. Step 3: Cross multiply
   223,812x = 318,667.50 × 318,667.50
4. Step 4: Simplify right side
   223,812x = 101,548,975,556.25
5. Step 5: Solve for x
   x = 101,548,975,556.25/223,812
6. Step 6: Final answer
   x = 453,724.45