Finding the Third Proportional to 21,409.88 and 30,432.38

Step by Step Solution

1. Step 1: Write the proportion equation
   21,409.88 : 30,432.38 = 30,432.38 : x
2. Step 2: Convert to fraction form
   21,409.88/30,432.38 = 30,432.38/x
3. Step 3: Cross multiply
   21,409.88x = 30,432.38 × 30,432.38
4. Step 4: Simplify right side
   21,409.88x = 926,129,448.14
5. Step 5: Solve for x
   x = 926,129,448.14/21,409.88
6. Step 6: Final answer
   x = 43,257.12