Finding the Third Proportional to 90,134 and 208,654

Step by Step Solution

1. Step 1: Write the proportion equation
   90,134 : 208,654 = 208,654 : x
2. Step 2: Convert to fraction form
   90,134/208,654 = 208,654/x
3. Step 3: Cross multiply
   90,134x = 208,654 × 208,654
4. Step 4: Simplify right side
   90,134x = 43,536,491,716
5. Step 5: Solve for x
   x = 43,536,491,716/90,134
6. Step 6: Final answer
   x = 483,019.63