Finding the Third Proportional to 138,553.50 and 214,965

Step by Step Solution

1. Step 1: Write the proportion equation
   138,553.50 : 214,965 = 214,965 : x
2. Step 2: Convert to fraction form
   138,553.50/214,965 = 214,965/x
3. Step 3: Cross multiply
   138,553.50x = 214,965 × 214,965
4. Step 4: Simplify right side
   138,553.50x = 46,209,951,225
5. Step 5: Solve for x
   x = 46,209,951,225/138,553.50
6. Step 6: Final answer
   x = 333,517.03