Finding the Third Proportional to 140,303.81 and 213,958.55

Step by Step Solution

1. Step 1: Write the proportion equation
   140,303.81 : 213,958.55 = 213,958.55 : x
2. Step 2: Convert to fraction form
   140,303.81/213,958.55 = 213,958.55/x
3. Step 3: Cross multiply
   140,303.81x = 213,958.55 × 213,958.55
4. Step 4: Simplify right side
   140,303.81x = 45,778,259,780.86
5. Step 5: Solve for x
   x = 45,778,259,780.86/140,303.81
6. Step 6: Final answer
   x = 326,279.51