Finding the Third Proportional to 166,585 and 243,630

Step by Step Solution

1. Step 1: Write the proportion equation
   166,585 : 243,630 = 243,630 : x
2. Step 2: Convert to fraction form
   166,585/243,630 = 243,630/x
3. Step 3: Cross multiply
   166,585x = 243,630 × 243,630
4. Step 4: Simplify right side
   166,585x = 59,355,576,900
5. Step 5: Solve for x
   x = 59,355,576,900/166,585
6. Step 6: Final answer
   x = 356,308.05