Finding the Third Proportional to 15,131.81 and 30,878.44

Step by Step Solution

1. Step 1: Write the proportion equation
   15,131.81 : 30,878.44 = 30,878.44 : x
2. Step 2: Convert to fraction form
   15,131.81/30,878.44 = 30,878.44/x
3. Step 3: Cross multiply
   15,131.81x = 30,878.44 × 30,878.44
4. Step 4: Simplify right side
   15,131.81x = 953,477,902.44
5. Step 5: Solve for x
   x = 953,477,902.44/15,131.81
6. Step 6: Final answer
   x = 63,011.48