Finding the Third Proportional to 139,939.50 and 301,748.25

Step by Step Solution

1. Step 1: Write the proportion equation
   139,939.50 : 301,748.25 = 301,748.25 : x
2. Step 2: Convert to fraction form
   139,939.50/301,748.25 = 301,748.25/x
3. Step 3: Cross multiply
   139,939.50x = 301,748.25 × 301,748.25
4. Step 4: Simplify right side
   139,939.50x = 91,052,006,378.06
5. Step 5: Solve for x
   x = 91,052,006,378.06/139,939.50
6. Step 6: Final answer
   x = 650,652.65