Finding the Third Proportional to 145,443 and 213,376.50

Step by Step Solution

1. Step 1: Write the proportion equation
   145,443 : 213,376.50 = 213,376.50 : x
2. Step 2: Convert to fraction form
   145,443/213,376.50 = 213,376.50/x
3. Step 3: Cross multiply
   145,443x = 213,376.50 × 213,376.50
4. Step 4: Simplify right side
   145,443x = 45,529,530,752.25
5. Step 5: Solve for x
   x = 45,529,530,752.25/145,443
6. Step 6: Final answer
   x = 313,040.37