Finding the Third Proportional to 18,819 and 31,063.50

Step by Step Solution

1. Step 1: Write the proportion equation
   18,819 : 31,063.50 = 31,063.50 : x
2. Step 2: Convert to fraction form
   18,819/31,063.50 = 31,063.50/x
3. Step 3: Cross multiply
   18,819x = 31,063.50 × 31,063.50
4. Step 4: Simplify right side
   18,819x = 964,941,032.25
5. Step 5: Solve for x
   x = 964,941,032.25/18,819
6. Step 6: Final answer
   x = 51,274.83