Finding the Third Proportional to 139,048 and 293,400

Step by Step Solution

1. Step 1: Write the proportion equation
   139,048 : 293,400 = 293,400 : x
2. Step 2: Convert to fraction form
   139,048/293,400 = 293,400/x
3. Step 3: Cross multiply
   139,048x = 293,400 × 293,400
4. Step 4: Simplify right side
   139,048x = 86,083,560,000
5. Step 5: Solve for x
   x = 86,083,560,000/139,048
6. Step 6: Final answer
   x = 619,092.40