Finding the Third Proportional to 13,630.78 and 19,998.14

Step by Step Solution

1. Step 1: Write the proportion equation
   13,630.78 : 19,998.14 = 19,998.14 : x
2. Step 2: Convert to fraction form
   13,630.78/19,998.14 = 19,998.14/x
3. Step 3: Cross multiply
   13,630.78x = 19,998.14 × 19,998.14
4. Step 4: Simplify right side
   13,630.78x = 399,925,628.46
5. Step 5: Solve for x
   x = 399,925,628.46/13,630.78
6. Step 6: Final answer
   x = 29,339.89