Finding the Third Proportional to 90,090 and 208,782

Step by Step Solution

1. Step 1: Write the proportion equation
   90,090 : 208,782 = 208,782 : x
2. Step 2: Convert to fraction form
   90,090/208,782 = 208,782/x
3. Step 3: Cross multiply
   90,090x = 208,782 × 208,782
4. Step 4: Simplify right side
   90,090x = 43,589,923,524
5. Step 5: Solve for x
   x = 43,589,923,524/90,090
6. Step 6: Final answer
   x = 483,848.63