Finding the Third Proportional to 42,086 and 90,086

Step by Step Solution

1. Step 1: Write the proportion equation
   42,086 : 90,086 = 90,086 : x
2. Step 2: Convert to fraction form
   42,086/90,086 = 90,086/x
3. Step 3: Cross multiply
   42,086x = 90,086 × 90,086
4. Step 4: Simplify right side
   42,086x = 8,115,487,396
5. Step 5: Solve for x
   x = 8,115,487,396/42,086
6. Step 6: Final answer
   x = 192,831.05