Finding the Third Proportional to 54,564.75 and 84,099.38

Step by Step Solution

1. Step 1: Write the proportion equation
   54,564.75 : 84,099.38 = 84,099.38 : x
2. Step 2: Convert to fraction form
   54,564.75/84,099.38 = 84,099.38/x
3. Step 3: Cross multiply
   54,564.75x = 84,099.38 × 84,099.38
4. Step 4: Simplify right side
   54,564.75x = 7,072,704,875.39
5. Step 5: Solve for x
   x = 7,072,704,875.39/54,564.75
6. Step 6: Final answer
   x = 129,620.40