Finding the Third Proportional to 139,014.56 and 303,513.75

Step by Step Solution

1. Step 1: Write the proportion equation
   139,014.56 : 303,513.75 = 303,513.75 : x
2. Step 2: Convert to fraction form
   139,014.56/303,513.75 = 303,513.75/x
3. Step 3: Cross multiply
   139,014.56x = 303,513.75 × 303,513.75
4. Step 4: Simplify right side
   139,014.56x = 92,120,596,439.06
5. Step 5: Solve for x
   x = 92,120,596,439.06/139,014.56
6. Step 6: Final answer
   x = 662,668.68