Finding the Third Proportional to 90,648 and 200,088

Step by Step Solution

1. Step 1: Write the proportion equation
   90,648 : 200,088 = 200,088 : x
2. Step 2: Convert to fraction form
   90,648/200,088 = 200,088/x
3. Step 3: Cross multiply
   90,648x = 200,088 × 200,088
4. Step 4: Simplify right side
   90,648x = 40,035,207,744
5. Step 5: Solve for x
   x = 40,035,207,744/90,648
6. Step 6: Final answer
   x = 441,655.72