Finding the Third Proportional to 12,851.50 and 28,031.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,851.50 : 28,031.50 = 28,031.50 : x
2. Step 2: Convert to fraction form
   12,851.50/28,031.50 = 28,031.50/x
3. Step 3: Cross multiply
   12,851.50x = 28,031.50 × 28,031.50
4. Step 4: Simplify right side
   12,851.50x = 785,764,992.25
5. Step 5: Solve for x
   x = 785,764,992.25/12,851.50
6. Step 6: Final answer
   x = 61,141.89