Finding the Third Proportional to 34,431 and 54,616.50

Step by Step Solution

1. Step 1: Write the proportion equation
   34,431 : 54,616.50 = 54,616.50 : x
2. Step 2: Convert to fraction form
   34,431/54,616.50 = 54,616.50/x
3. Step 3: Cross multiply
   34,431x = 54,616.50 × 54,616.50
4. Step 4: Simplify right side
   34,431x = 2,982,962,072.25
5. Step 5: Solve for x
   x = 2,982,962,072.25/34,431
6. Step 6: Final answer
   x = 86,635.94