Finding the Third Proportional to 139.88 and 375.94

Step by Step Solution

1. Step 1: Write the proportion equation
   139.88 : 375.94 = 375.94 : x
2. Step 2: Convert to fraction form
   139.88/375.94 = 375.94/x
3. Step 3: Cross multiply
   139.88x = 375.94 × 375.94
4. Step 4: Simplify right side
   139.88x = 141,329.00
5. Step 5: Solve for x
   x = 141,329.00/139.88
6. Step 6: Final answer
   x = 1,010.40