Finding the Third Proportional to 42,159.66 and 89,781.33

Step by Step Solution

1. Step 1: Write the proportion equation
   42,159.66 : 89,781.33 = 89,781.33 : x
2. Step 2: Convert to fraction form
   42,159.66/89,781.33 = 89,781.33/x
3. Step 3: Cross multiply
   42,159.66x = 89,781.33 × 89,781.33
4. Step 4: Simplify right side
   42,159.66x = 8,060,686,879.89
5. Step 5: Solve for x
   x = 8,060,686,879.89/42,159.66
6. Step 6: Final answer
   x = 191,194.32