Finding the Third Proportional to 139,869 and 305,922.75

Step by Step Solution

1. Step 1: Write the proportion equation
   139,869 : 305,922.75 = 305,922.75 : x
2. Step 2: Convert to fraction form
   139,869/305,922.75 = 305,922.75/x
3. Step 3: Cross multiply
   139,869x = 305,922.75 × 305,922.75
4. Step 4: Simplify right side
   139,869x = 93,588,728,967.56
5. Step 5: Solve for x
   x = 93,588,728,967.56/139,869
6. Step 6: Final answer
   x = 669,117.02