Finding the Third Proportional to 158,499 and 215,878

Step by Step Solution

1. Step 1: Write the proportion equation
   158,499 : 215,878 = 215,878 : x
2. Step 2: Convert to fraction form
   158,499/215,878 = 215,878/x
3. Step 3: Cross multiply
   158,499x = 215,878 × 215,878
4. Step 4: Simplify right side
   158,499x = 46,603,310,884
5. Step 5: Solve for x
   x = 46,603,310,884/158,499
6. Step 6: Final answer
   x = 294,029.05