Finding the Third Proportional to 42,418.69 and 89,758.13

Step by Step Solution

1. Step 1: Write the proportion equation
   42,418.69 : 89,758.13 = 89,758.13 : x
2. Step 2: Convert to fraction form
   42,418.69/89,758.13 = 89,758.13/x
3. Step 3: Cross multiply
   42,418.69x = 89,758.13 × 89,758.13
4. Step 4: Simplify right side
   42,418.69x = 8,056,521,003.52
5. Step 5: Solve for x
   x = 8,056,521,003.52/42,418.69
6. Step 6: Final answer
   x = 189,928.58