Finding the Third Proportional to 12,987.13 and 28,404.25

Step by Step Solution

1. Step 1: Write the proportion equation
   12,987.13 : 28,404.25 = 28,404.25 : x
2. Step 2: Convert to fraction form
   12,987.13/28,404.25 = 28,404.25/x
3. Step 3: Cross multiply
   12,987.13x = 28,404.25 × 28,404.25
4. Step 4: Simplify right side
   12,987.13x = 806,801,418.06
5. Step 5: Solve for x
   x = 806,801,418.06/12,987.13
6. Step 6: Final answer
   x = 62,123.17