Finding the Third Proportional to 9,878.63 and 18,844.31

Step by Step Solution

1. Step 1: Write the proportion equation
   9,878.63 : 18,844.31 = 18,844.31 : x
2. Step 2: Convert to fraction form
   9,878.63/18,844.31 = 18,844.31/x
3. Step 3: Cross multiply
   9,878.63x = 18,844.31 × 18,844.31
4. Step 4: Simplify right side
   9,878.63x = 355,108,113.60
5. Step 5: Solve for x
   x = 355,108,113.60/9,878.63
6. Step 6: Final answer
   x = 35,947.12