Finding the Third Proportional to 12,985.81 and 28,021.91

Step by Step Solution

1. Step 1: Write the proportion equation
   12,985.81 : 28,021.91 = 28,021.91 : x
2. Step 2: Convert to fraction form
   12,985.81/28,021.91 = 28,021.91/x
3. Step 3: Cross multiply
   12,985.81x = 28,021.91 × 28,021.91
4. Step 4: Simplify right side
   12,985.81x = 785,227,229.88
5. Step 5: Solve for x
   x = 785,227,229.88/12,985.81
6. Step 6: Final answer
   x = 60,468.09