Finding the Third Proportional to 27,679 and 42,908

Step by Step Solution

1. Step 1: Write the proportion equation
   27,679 : 42,908 = 42,908 : x
2. Step 2: Convert to fraction form
   27,679/42,908 = 42,908/x
3. Step 3: Cross multiply
   27,679x = 42,908 × 42,908
4. Step 4: Simplify right side
   27,679x = 1,841,096,464
5. Step 5: Solve for x
   x = 1,841,096,464/27,679
6. Step 6: Final answer
   x = 66,516.00