Finding the Third Proportional to 105,660 and 216,181.50

Step by Step Solution

1. Step 1: Write the proportion equation
   105,660 : 216,181.50 = 216,181.50 : x
2. Step 2: Convert to fraction form
   105,660/216,181.50 = 216,181.50/x
3. Step 3: Cross multiply
   105,660x = 216,181.50 × 216,181.50
4. Step 4: Simplify right side
   105,660x = 46,734,440,942.25
5. Step 5: Solve for x
   x = 46,734,440,942.25/105,660
6. Step 6: Final answer
   x = 442,309.68