Finding the Third Proportional to 19,411.31 and 42,455.81

Step by Step Solution

1. Step 1: Write the proportion equation
   19,411.31 : 42,455.81 = 42,455.81 : x
2. Step 2: Convert to fraction form
   19,411.31/42,455.81 = 42,455.81/x
3. Step 3: Cross multiply
   19,411.31x = 42,455.81 × 42,455.81
4. Step 4: Simplify right side
   19,411.31x = 1,802,496,015.04
5. Step 5: Solve for x
   x = 1,802,496,015.04/19,411.31
6. Step 6: Final answer
   x = 92,858.02