Finding the Third Proportional to 137,018.50 and 215,241

Step by Step Solution

1. Step 1: Write the proportion equation
   137,018.50 : 215,241 = 215,241 : x
2. Step 2: Convert to fraction form
   137,018.50/215,241 = 215,241/x
3. Step 3: Cross multiply
   137,018.50x = 215,241 × 215,241
4. Step 4: Simplify right side
   137,018.50x = 46,328,688,081
5. Step 5: Solve for x
   x = 46,328,688,081/137,018.50
6. Step 6: Final answer
   x = 338,119.95