Finding the Third Proportional to 12,978 and 28,234.13

Step by Step Solution

1. Step 1: Write the proportion equation
   12,978 : 28,234.13 = 28,234.13 : x
2. Step 2: Convert to fraction form
   12,978/28,234.13 = 28,234.13/x
3. Step 3: Cross multiply
   12,978x = 28,234.13 × 28,234.13
4. Step 4: Simplify right side
   12,978x = 797,165,814.52
5. Step 5: Solve for x
   x = 797,165,814.52/12,978
6. Step 6: Final answer
   x = 61,424.40