Finding the Third Proportional to 13,876.31 and 30,339.56

Step by Step Solution

1. Step 1: Write the proportion equation
   13,876.31 : 30,339.56 = 30,339.56 : x
2. Step 2: Convert to fraction form
   13,876.31/30,339.56 = 30,339.56/x
3. Step 3: Cross multiply
   13,876.31x = 30,339.56 × 30,339.56
4. Step 4: Simplify right side
   13,876.31x = 920,489,052.69
5. Step 5: Solve for x
   x = 920,489,052.69/13,876.31
6. Step 6: Final answer
   x = 66,335.28