Finding the Third Proportional to 166,443.75 and 359,491.50

Step by Step Solution

1. Step 1: Write the proportion equation
   166,443.75 : 359,491.50 = 359,491.50 : x
2. Step 2: Convert to fraction form
   166,443.75/359,491.50 = 359,491.50/x
3. Step 3: Cross multiply
   166,443.75x = 359,491.50 × 359,491.50
4. Step 4: Simplify right side
   166,443.75x = 129,234,138,572.25
5. Step 5: Solve for x
   x = 129,234,138,572.25/166,443.75
6. Step 6: Final answer
   x = 776,443.32