Finding the Third Proportional to 18,972.75 and 28,436.25

Step by Step Solution

1. Step 1: Write the proportion equation
   18,972.75 : 28,436.25 = 28,436.25 : x
2. Step 2: Convert to fraction form
   18,972.75/28,436.25 = 28,436.25/x
3. Step 3: Cross multiply
   18,972.75x = 28,436.25 × 28,436.25
4. Step 4: Simplify right side
   18,972.75x = 808,620,314.06
5. Step 5: Solve for x
   x = 808,620,314.06/18,972.75
6. Step 6: Final answer
   x = 42,620.09