Finding the Third Proportional to 137,016 and 212,040

Step by Step Solution

1. Step 1: Write the proportion equation
   137,016 : 212,040 = 212,040 : x
2. Step 2: Convert to fraction form
   137,016/212,040 = 212,040/x
3. Step 3: Cross multiply
   137,016x = 212,040 × 212,040
4. Step 4: Simplify right side
   137,016x = 44,960,961,600
5. Step 5: Solve for x
   x = 44,960,961,600/137,016
6. Step 6: Final answer
   x = 328,143.88