Finding the Third Proportional to 46,145 and 100,390

Step by Step Solution

1. Step 1: Write the proportion equation
   46,145 : 100,390 = 100,390 : x
2. Step 2: Convert to fraction form
   46,145/100,390 = 100,390/x
3. Step 3: Cross multiply
   46,145x = 100,390 × 100,390
4. Step 4: Simplify right side
   46,145x = 10,078,152,100
5. Step 5: Solve for x
   x = 10,078,152,100/46,145
6. Step 6: Final answer
   x = 218,401.82