Finding the Third Proportional to 104,139 and 215,662.50

Step by Step Solution

1. Step 1: Write the proportion equation
   104,139 : 215,662.50 = 215,662.50 : x
2. Step 2: Convert to fraction form
   104,139/215,662.50 = 215,662.50/x
3. Step 3: Cross multiply
   104,139x = 215,662.50 × 215,662.50
4. Step 4: Simplify right side
   104,139x = 46,510,313,906.25
5. Step 5: Solve for x
   x = 46,510,313,906.25/104,139
6. Step 6: Final answer
   x = 446,617.64