Finding the Third Proportional to 138,459.38 and 326,667.94

Step by Step Solution

1. Step 1: Write the proportion equation
   138,459.38 : 326,667.94 = 326,667.94 : x
2. Step 2: Convert to fraction form
   138,459.38/326,667.94 = 326,667.94/x
3. Step 3: Cross multiply
   138,459.38x = 326,667.94 × 326,667.94
4. Step 4: Simplify right side
   138,459.38x = 106,711,941,390.50
5. Step 5: Solve for x
   x = 106,711,941,390.50/138,459.38
6. Step 6: Final answer
   x = 770,709.40