Finding the Third Proportional to 19,428 and 41,920.50

Step by Step Solution

1. Step 1: Write the proportion equation
   19,428 : 41,920.50 = 41,920.50 : x
2. Step 2: Convert to fraction form
   19,428/41,920.50 = 41,920.50/x
3. Step 3: Cross multiply
   19,428x = 41,920.50 × 41,920.50
4. Step 4: Simplify right side
   19,428x = 1,757,328,320.25
5. Step 5: Solve for x
   x = 1,757,328,320.25/19,428
6. Step 6: Final answer
   x = 90,453.38