Finding the Third Proportional to 34,042.78 and 69,589.13

Step by Step Solution

1. Step 1: Write the proportion equation
   34,042.78 : 69,589.13 = 69,589.13 : x
2. Step 2: Convert to fraction form
   34,042.78/69,589.13 = 69,589.13/x
3. Step 3: Cross multiply
   34,042.78x = 69,589.13 × 69,589.13
4. Step 4: Simplify right side
   34,042.78x = 4,842,646,318.27
5. Step 5: Solve for x
   x = 4,842,646,318.27/34,042.78
6. Step 6: Final answer
   x = 142,251.78