Finding the Third Proportional to 34,081.31 and 69,815.25

Step by Step Solution

1. Step 1: Write the proportion equation
   34,081.31 : 69,815.25 = 69,815.25 : x
2. Step 2: Convert to fraction form
   34,081.31/69,815.25 = 69,815.25/x
3. Step 3: Cross multiply
   34,081.31x = 69,815.25 × 69,815.25
4. Step 4: Simplify right side
   34,081.31x = 4,874,169,132.56
5. Step 5: Solve for x
   x = 4,874,169,132.56/34,081.31
6. Step 6: Final answer
   x = 143,015.89