Finding the Third Proportional to 20,115.84 and 42,304.78

Step by Step Solution

1. Step 1: Write the proportion equation
   20,115.84 : 42,304.78 = 42,304.78 : x
2. Step 2: Convert to fraction form
   20,115.84/42,304.78 = 42,304.78/x
3. Step 3: Cross multiply
   20,115.84x = 42,304.78 × 42,304.78
4. Step 4: Simplify right side
   20,115.84x = 1,789,694,516.61
5. Step 5: Solve for x
   x = 1,789,694,516.61/20,115.84
6. Step 6: Final answer
   x = 88,969.40