Finding the Third Proportional to 91,818 and 141,878

Step by Step Solution

1. Step 1: Write the proportion equation
   91,818 : 141,878 = 141,878 : x
2. Step 2: Convert to fraction form
   91,818/141,878 = 141,878/x
3. Step 3: Cross multiply
   91,818x = 141,878 × 141,878
4. Step 4: Simplify right side
   91,818x = 20,129,366,884
5. Step 5: Solve for x
   x = 20,129,366,884/91,818
6. Step 6: Final answer
   x = 219,231.16