Finding the Third Proportional to 42,228 and 90,354

Step by Step Solution

1. Step 1: Write the proportion equation
   42,228 : 90,354 = 90,354 : x
2. Step 2: Convert to fraction form
   42,228/90,354 = 90,354/x
3. Step 3: Cross multiply
   42,228x = 90,354 × 90,354
4. Step 4: Simplify right side
   42,228x = 8,163,845,316
5. Step 5: Solve for x
   x = 8,163,845,316/42,228
6. Step 6: Final answer
   x = 193,327.78