Finding the Third Proportional to 42,543 and 90,673.88

Step by Step Solution

1. Step 1: Write the proportion equation
   42,543 : 90,673.88 = 90,673.88 : x
2. Step 2: Convert to fraction form
   42,543/90,673.88 = 90,673.88/x
3. Step 3: Cross multiply
   42,543x = 90,673.88 × 90,673.88
4. Step 4: Simplify right side
   42,543x = 8,221,751,607.52
5. Step 5: Solve for x
   x = 8,221,751,607.52/42,543
6. Step 6: Final answer
   x = 193,257.45