Finding the Third Proportional to 139,444 and 215,464

Step by Step Solution

1. Step 1: Write the proportion equation
   139,444 : 215,464 = 215,464 : x
2. Step 2: Convert to fraction form
   139,444/215,464 = 215,464/x
3. Step 3: Cross multiply
   139,444x = 215,464 × 215,464
4. Step 4: Simplify right side
   139,444x = 46,424,735,296
5. Step 5: Solve for x
   x = 46,424,735,296/139,444
6. Step 6: Final answer
   x = 332,927.45