Finding the Third Proportional to 139,540.50 and 293,904

Step by Step Solution

1. Step 1: Write the proportion equation
   139,540.50 : 293,904 = 293,904 : x
2. Step 2: Convert to fraction form
   139,540.50/293,904 = 293,904/x
3. Step 3: Cross multiply
   139,540.50x = 293,904 × 293,904
4. Step 4: Simplify right side
   139,540.50x = 86,379,561,216
5. Step 5: Solve for x
   x = 86,379,561,216/139,540.50
6. Step 6: Final answer
   x = 619,028.61