Finding the Third Proportional to 2,279.63 and 4,987.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,279.63 : 4,987.88 = 4,987.88 : x
2. Step 2: Convert to fraction form
   2,279.63/4,987.88 = 4,987.88/x
3. Step 3: Cross multiply
   2,279.63x = 4,987.88 × 4,987.88
4. Step 4: Simplify right side
   2,279.63x = 24,878,897.02
5. Step 5: Solve for x
   x = 24,878,897.02/2,279.63
6. Step 6: Final answer
   x = 10,913.59