Finding the Third Proportional to 12,987.38 and 28,404.75

Step by Step Solution

1. Step 1: Write the proportion equation
   12,987.38 : 28,404.75 = 28,404.75 : x
2. Step 2: Convert to fraction form
   12,987.38/28,404.75 = 28,404.75/x
3. Step 3: Cross multiply
   12,987.38x = 28,404.75 × 28,404.75
4. Step 4: Simplify right side
   12,987.38x = 806,829,822.56
5. Step 5: Solve for x
   x = 806,829,822.56/12,987.38
6. Step 6: Final answer
   x = 62,124.16