Finding the Third Proportional to 226,980 and 318,106.50

Step by Step Solution

1. Step 1: Write the proportion equation
   226,980 : 318,106.50 = 318,106.50 : x
2. Step 2: Convert to fraction form
   226,980/318,106.50 = 318,106.50/x
3. Step 3: Cross multiply
   226,980x = 318,106.50 × 318,106.50
4. Step 4: Simplify right side
   226,980x = 101,191,745,342.25
5. Step 5: Solve for x
   x = 101,191,745,342.25/226,980
6. Step 6: Final answer
   x = 445,817.89