Finding the Third Proportional to 19,640.81 and 42,948.56

Step by Step Solution

1. Step 1: Write the proportion equation
   19,640.81 : 42,948.56 = 42,948.56 : x
2. Step 2: Convert to fraction form
   19,640.81/42,948.56 = 42,948.56/x
3. Step 3: Cross multiply
   19,640.81x = 42,948.56 × 42,948.56
4. Step 4: Simplify right side
   19,640.81x = 1,844,579,020.82
5. Step 5: Solve for x
   x = 1,844,579,020.82/19,640.81
6. Step 6: Final answer
   x = 93,915.62