Finding the Third Proportional to 9,210.38 and 19,868.63

Step by Step Solution

1. Step 1: Write the proportion equation
   9,210.38 : 19,868.63 = 19,868.63 : x
2. Step 2: Convert to fraction form
   9,210.38/19,868.63 = 19,868.63/x
3. Step 3: Cross multiply
   9,210.38x = 19,868.63 × 19,868.63
4. Step 4: Simplify right side
   9,210.38x = 394,762,259.39
5. Step 5: Solve for x
   x = 394,762,259.39/9,210.38
6. Step 6: Final answer
   x = 42,860.61