Finding the Third Proportional to 15,118.92 and 21,151.32

Step by Step Solution

1. Step 1: Write the proportion equation
   15,118.92 : 21,151.32 = 21,151.32 : x
2. Step 2: Convert to fraction form
   15,118.92/21,151.32 = 21,151.32/x
3. Step 3: Cross multiply
   15,118.92x = 21,151.32 × 21,151.32
4. Step 4: Simplify right side
   15,118.92x = 447,378,454.24
5. Step 5: Solve for x
   x = 447,378,454.24/15,118.92
6. Step 6: Final answer
   x = 29,590.64