Finding the Third Proportional to 9,200.81 and 19,859.63

Step by Step Solution

1. Step 1: Write the proportion equation
   9,200.81 : 19,859.63 = 19,859.63 : x
2. Step 2: Convert to fraction form
   9,200.81/19,859.63 = 19,859.63/x
3. Step 3: Cross multiply
   9,200.81x = 19,859.63 × 19,859.63
4. Step 4: Simplify right side
   9,200.81x = 394,404,705.14
5. Step 5: Solve for x
   x = 394,404,705.14/9,200.81
6. Step 6: Final answer
   x = 42,866.29