Finding the Third Proportional to 4,725.84 and 9,899.72

Step by Step Solution

1. Step 1: Write the proportion equation
   4,725.84 : 9,899.72 = 9,899.72 : x
2. Step 2: Convert to fraction form
   4,725.84/9,899.72 = 9,899.72/x
3. Step 3: Cross multiply
   4,725.84x = 9,899.72 × 9,899.72
4. Step 4: Simplify right side
   4,725.84x = 98,004,431.33
5. Step 5: Solve for x
   x = 98,004,431.33/4,725.84
6. Step 6: Final answer
   x = 20,737.98