Finding the Third Proportional to 42,357 and 90,543

Step by Step Solution

1. Step 1: Write the proportion equation
   42,357 : 90,543 = 90,543 : x
2. Step 2: Convert to fraction form
   42,357/90,543 = 90,543/x
3. Step 3: Cross multiply
   42,357x = 90,543 × 90,543
4. Step 4: Simplify right side
   42,357x = 8,198,034,849
5. Step 5: Solve for x
   x = 8,198,034,849/42,357
6. Step 6: Final answer
   x = 193,546.16