Finding the Third Proportional to 90,112 and 208,836

Step by Step Solution

1. Step 1: Write the proportion equation
   90,112 : 208,836 = 208,836 : x
2. Step 2: Convert to fraction form
   90,112/208,836 = 208,836/x
3. Step 3: Cross multiply
   90,112x = 208,836 × 208,836
4. Step 4: Simplify right side
   90,112x = 43,612,474,896
5. Step 5: Solve for x
   x = 43,612,474,896/90,112
6. Step 6: Final answer
   x = 483,980.77