Finding the Third Proportional to 13,339.50 and 30,878.25

Step by Step Solution

1. Step 1: Write the proportion equation
   13,339.50 : 30,878.25 = 30,878.25 : x
2. Step 2: Convert to fraction form
   13,339.50/30,878.25 = 30,878.25/x
3. Step 3: Cross multiply
   13,339.50x = 30,878.25 × 30,878.25
4. Step 4: Simplify right side
   13,339.50x = 953,466,323.06
5. Step 5: Solve for x
   x = 953,466,323.06/13,339.50
6. Step 6: Final answer
   x = 71,476.92