Finding the Third Proportional to 42,354 and 90,186

Step by Step Solution

1. Step 1: Write the proportion equation
   42,354 : 90,186 = 90,186 : x
2. Step 2: Convert to fraction form
   42,354/90,186 = 90,186/x
3. Step 3: Cross multiply
   42,354x = 90,186 × 90,186
4. Step 4: Simplify right side
   42,354x = 8,133,514,596
5. Step 5: Solve for x
   x = 8,133,514,596/42,354
6. Step 6: Final answer
   x = 192,036.52