Finding the Third Proportional to 21,870 and 33,928.88

Step by Step Solution

1. Step 1: Write the proportion equation
   21,870 : 33,928.88 = 33,928.88 : x
2. Step 2: Convert to fraction form
   21,870/33,928.88 = 33,928.88/x
3. Step 3: Cross multiply
   21,870x = 33,928.88 × 33,928.88
4. Step 4: Simplify right side
   21,870x = 1,151,168,558.77
5. Step 5: Solve for x
   x = 1,151,168,558.77/21,870
6. Step 6: Final answer
   x = 52,636.88