Finding the Third Proportional to 34,109 and 69,908

Step by Step Solution

1. Step 1: Write the proportion equation
   34,109 : 69,908 = 69,908 : x
2. Step 2: Convert to fraction form
   34,109/69,908 = 69,908/x
3. Step 3: Cross multiply
   34,109x = 69,908 × 69,908
4. Step 4: Simplify right side
   34,109x = 4,887,128,464
5. Step 5: Solve for x
   x = 4,887,128,464/34,109
6. Step 6: Final answer
   x = 143,279.73