Finding the Third Proportional to 139,856 and 215,094

Step by Step Solution

1. Step 1: Write the proportion equation
   139,856 : 215,094 = 215,094 : x
2. Step 2: Convert to fraction form
   139,856/215,094 = 215,094/x
3. Step 3: Cross multiply
   139,856x = 215,094 × 215,094
4. Step 4: Simplify right side
   139,856x = 46,265,428,836
5. Step 5: Solve for x
   x = 46,265,428,836/139,856
6. Step 6: Final answer
   x = 330,807.61