Finding the Third Proportional to 139,859.16 and 305,335.83

Step by Step Solution

1. Step 1: Write the proportion equation
   139,859.16 : 305,335.83 = 305,335.83 : x
2. Step 2: Convert to fraction form
   139,859.16/305,335.83 = 305,335.83/x
3. Step 3: Cross multiply
   139,859.16x = 305,335.83 × 305,335.83
4. Step 4: Simplify right side
   139,859.16x = 93,229,967,936.78
5. Step 5: Solve for x
   x = 93,229,967,936.78/139,859.16
6. Step 6: Final answer
   x = 666,598.96