Finding the Third Proportional to 305,158.50 and 443,886

Step by Step Solution

1. Step 1: Write the proportion equation
   305,158.50 : 443,886 = 443,886 : x
2. Step 2: Convert to fraction form
   305,158.50/443,886 = 443,886/x
3. Step 3: Cross multiply
   305,158.50x = 443,886 × 443,886
4. Step 4: Simplify right side
   305,158.50x = 197,034,780,996
5. Step 5: Solve for x
   x = 197,034,780,996/305,158.50
6. Step 6: Final answer
   x = 645,680.13