Finding the Third Proportional to 34,111.50 and 69,912

Step by Step Solution

1. Step 1: Write the proportion equation
   34,111.50 : 69,912 = 69,912 : x
2. Step 2: Convert to fraction form
   34,111.50/69,912 = 69,912/x
3. Step 3: Cross multiply
   34,111.50x = 69,912 × 69,912
4. Step 4: Simplify right side
   34,111.50x = 4,887,687,744
5. Step 5: Solve for x
   x = 4,887,687,744/34,111.50
6. Step 6: Final answer
   x = 143,285.63