Finding the Third Proportional to 42,260 and 66,906

Step by Step Solution

1. Step 1: Write the proportion equation
   42,260 : 66,906 = 66,906 : x
2. Step 2: Convert to fraction form
   42,260/66,906 = 66,906/x
3. Step 3: Cross multiply
   42,260x = 66,906 × 66,906
4. Step 4: Simplify right side
   42,260x = 4,476,412,836
5. Step 5: Solve for x
   x = 4,476,412,836/42,260
6. Step 6: Final answer
   x = 105,925.53