Finding the Third Proportional to 139,040 and 293,384

Step by Step Solution

1. Step 1: Write the proportion equation
   139,040 : 293,384 = 293,384 : x
2. Step 2: Convert to fraction form
   139,040/293,384 = 293,384/x
3. Step 3: Cross multiply
   139,040x = 293,384 × 293,384
4. Step 4: Simplify right side
   139,040x = 86,074,171,456
5. Step 5: Solve for x
   x = 86,074,171,456/139,040
6. Step 6: Final answer
   x = 619,060.50