Finding the Third Proportional to 104,688.50 and 214,921

Step by Step Solution

1. Step 1: Write the proportion equation
   104,688.50 : 214,921 = 214,921 : x
2. Step 2: Convert to fraction form
   104,688.50/214,921 = 214,921/x
3. Step 3: Cross multiply
   104,688.50x = 214,921 × 214,921
4. Step 4: Simplify right side
   104,688.50x = 46,191,036,241
5. Step 5: Solve for x
   x = 46,191,036,241/104,688.50
6. Step 6: Final answer
   x = 441,223.59