Finding the Third Proportional to 166,491 and 264,808.50

Step by Step Solution

1. Step 1: Write the proportion equation
   166,491 : 264,808.50 = 264,808.50 : x
2. Step 2: Convert to fraction form
   166,491/264,808.50 = 264,808.50/x
3. Step 3: Cross multiply
   166,491x = 264,808.50 × 264,808.50
4. Step 4: Simplify right side
   166,491x = 70,123,541,672.25
5. Step 5: Solve for x
   x = 70,123,541,672.25/166,491
6. Step 6: Final answer
   x = 421,185.18