Finding the Third Proportional to 70,928 and 104,990

Step by Step Solution

1. Step 1: Write the proportion equation
   70,928 : 104,990 = 104,990 : x
2. Step 2: Convert to fraction form
   70,928/104,990 = 104,990/x
3. Step 3: Cross multiply
   70,928x = 104,990 × 104,990
4. Step 4: Simplify right side
   70,928x = 11,022,900,100
5. Step 5: Solve for x
   x = 11,022,900,100/70,928
6. Step 6: Final answer
   x = 155,409.71