Finding the Third Proportional to 90,755 and 208,308

Step by Step Solution

1. Step 1: Write the proportion equation
   90,755 : 208,308 = 208,308 : x
2. Step 2: Convert to fraction form
   90,755/208,308 = 208,308/x
3. Step 3: Cross multiply
   90,755x = 208,308 × 208,308
4. Step 4: Simplify right side
   90,755x = 43,392,222,864
5. Step 5: Solve for x
   x = 43,392,222,864/90,755
6. Step 6: Final answer
   x = 478,124.87