Finding the Third Proportional to 104,140.50 and 215,665.50

Step by Step Solution

1. Step 1: Write the proportion equation
   104,140.50 : 215,665.50 = 215,665.50 : x
2. Step 2: Convert to fraction form
   104,140.50/215,665.50 = 215,665.50/x
3. Step 3: Cross multiply
   104,140.50x = 215,665.50 × 215,665.50
4. Step 4: Simplify right side
   104,140.50x = 46,511,607,890.25
5. Step 5: Solve for x
   x = 46,511,607,890.25/104,140.50
6. Step 6: Final answer
   x = 446,623.63