Finding the Third Proportional to 91,818 and 140,458

Step by Step Solution

1. Step 1: Write the proportion equation
   91,818 : 140,458 = 140,458 : x
2. Step 2: Convert to fraction form
   91,818/140,458 = 140,458/x
3. Step 3: Cross multiply
   91,818x = 140,458 × 140,458
4. Step 4: Simplify right side
   91,818x = 19,728,449,764
5. Step 5: Solve for x
   x = 19,728,449,764/91,818
6. Step 6: Final answer
   x = 214,864.73