Finding the Third Proportional to 90,753 and 208,303

Step by Step Solution

1. Step 1: Write the proportion equation
   90,753 : 208,303 = 208,303 : x
2. Step 2: Convert to fraction form
   90,753/208,303 = 208,303/x
3. Step 3: Cross multiply
   90,753x = 208,303 × 208,303
4. Step 4: Simplify right side
   90,753x = 43,390,139,809
5. Step 5: Solve for x
   x = 43,390,139,809/90,753
6. Step 6: Final answer
   x = 478,112.46