Finding the Third Proportional to 42,806.81 and 68,174.16

Step by Step Solution

1. Step 1: Write the proportion equation
   42,806.81 : 68,174.16 = 68,174.16 : x
2. Step 2: Convert to fraction form
   42,806.81/68,174.16 = 68,174.16/x
3. Step 3: Cross multiply
   42,806.81x = 68,174.16 × 68,174.16
4. Step 4: Simplify right side
   42,806.81x = 4,647,715,580.40
5. Step 5: Solve for x
   x = 4,647,715,580.40/42,806.81
6. Step 6: Final answer
   x = 108,574.20