Finding the Third Proportional to 139,005 and 303,501.75

Step by Step Solution

1. Step 1: Write the proportion equation
   139,005 : 303,501.75 = 303,501.75 : x
2. Step 2: Convert to fraction form
   139,005/303,501.75 = 303,501.75/x
3. Step 3: Cross multiply
   139,005x = 303,501.75 × 303,501.75
4. Step 4: Simplify right side
   139,005x = 92,113,312,253.06
5. Step 5: Solve for x
   x = 92,113,312,253.06/139,005
6. Step 6: Final answer
   x = 662,661.86