Finding the Third Proportional to 42,864.19 and 85,105.69

Step by Step Solution

1. Step 1: Write the proportion equation
   42,864.19 : 85,105.69 = 85,105.69 : x
2. Step 2: Convert to fraction form
   42,864.19/85,105.69 = 85,105.69/x
3. Step 3: Cross multiply
   42,864.19x = 85,105.69 × 85,105.69
4. Step 4: Simplify right side
   42,864.19x = 7,242,978,044.85
5. Step 5: Solve for x
   x = 7,242,978,044.85/42,864.19
6. Step 6: Final answer
   x = 168,975.05