Finding the Third Proportional to 13,630.78 and 31,855.78

Step by Step Solution

1. Step 1: Write the proportion equation
   13,630.78 : 31,855.78 = 31,855.78 : x
2. Step 2: Convert to fraction form
   13,630.78/31,855.78 = 31,855.78/x
3. Step 3: Cross multiply
   13,630.78x = 31,855.78 × 31,855.78
4. Step 4: Simplify right side
   13,630.78x = 1,014,790,799.05
5. Step 5: Solve for x
   x = 1,014,790,799.05/13,630.78
6. Step 6: Final answer
   x = 74,448.47