Finding the Third Proportional to 12,980.53 and 28,363.78

Step by Step Solution

1. Step 1: Write the proportion equation
   12,980.53 : 28,363.78 = 28,363.78 : x
2. Step 2: Convert to fraction form
   12,980.53/28,363.78 = 28,363.78/x
3. Step 3: Cross multiply
   12,980.53x = 28,363.78 × 28,363.78
4. Step 4: Simplify right side
   12,980.53x = 804,504,086.80
5. Step 5: Solve for x
   x = 804,504,086.80/12,980.53
6. Step 6: Final answer
   x = 61,977.75