Finding the Third Proportional to 91,816 and 140,455

Step by Step Solution

1. Step 1: Write the proportion equation
   91,816 : 140,455 = 140,455 : x
2. Step 2: Convert to fraction form
   91,816/140,455 = 140,455/x
3. Step 3: Cross multiply
   91,816x = 140,455 × 140,455
4. Step 4: Simplify right side
   91,816x = 19,727,607,025
5. Step 5: Solve for x
   x = 19,727,607,025/91,816
6. Step 6: Final answer
   x = 214,860.23