Finding the Third Proportional to 12,980.25 and 28,238.63

Step by Step Solution

1. Step 1: Write the proportion equation
   12,980.25 : 28,238.63 = 28,238.63 : x
2. Step 2: Convert to fraction form
   12,980.25/28,238.63 = 28,238.63/x
3. Step 3: Cross multiply
   12,980.25x = 28,238.63 × 28,238.63
4. Step 4: Simplify right side
   12,980.25x = 797,419,941.89
5. Step 5: Solve for x
   x = 797,419,941.89/12,980.25
6. Step 6: Final answer
   x = 61,433.33