Finding the Third Proportional to 42,654 and 68,145

Step by Step Solution

1. Step 1: Write the proportion equation
   42,654 : 68,145 = 68,145 : x
2. Step 2: Convert to fraction form
   42,654/68,145 = 68,145/x
3. Step 3: Cross multiply
   42,654x = 68,145 × 68,145
4. Step 4: Simplify right side
   42,654x = 4,643,741,025
5. Step 5: Solve for x
   x = 4,643,741,025/42,654
6. Step 6: Final answer
   x = 108,870.00