Finding the Third Proportional to 194,129.35 and 397,667.72

Step by Step Solution

1. Step 1: Write the proportion equation
   194,129.35 : 397,667.72 = 397,667.72 : x
2. Step 2: Convert to fraction form
   194,129.35/397,667.72 = 397,667.72/x
3. Step 3: Cross multiply
   194,129.35x = 397,667.72 × 397,667.72
4. Step 4: Simplify right side
   194,129.35x = 158,139,615,700.87
5. Step 5: Solve for x
   x = 158,139,615,700.87/194,129.35
6. Step 6: Final answer
   x = 814,609.50