Finding the Third Proportional to 42,220 and 90,348

Step by Step Solution

1. Step 1: Write the proportion equation
   42,220 : 90,348 = 90,348 : x
2. Step 2: Convert to fraction form
   42,220/90,348 = 90,348/x
3. Step 3: Cross multiply
   42,220x = 90,348 × 90,348
4. Step 4: Simplify right side
   42,220x = 8,162,761,104
5. Step 5: Solve for x
   x = 8,162,761,104/42,220
6. Step 6: Final answer
   x = 193,338.73