Finding the Third Proportional to 43,099.31 and 66,891.38

Step by Step Solution

1. Step 1: Write the proportion equation
   43,099.31 : 66,891.38 = 66,891.38 : x
2. Step 2: Convert to fraction form
   43,099.31/66,891.38 = 66,891.38/x
3. Step 3: Cross multiply
   43,099.31x = 66,891.38 × 66,891.38
4. Step 4: Simplify right side
   43,099.31x = 4,474,456,049.39
5. Step 5: Solve for x
   x = 4,474,456,049.39/43,099.31
6. Step 6: Final answer
   x = 103,817.34