Finding the Third Proportional to 217,965.50 and 461,860

Step by Step Solution

1. Step 1: Write the proportion equation
   217,965.50 : 461,860 = 461,860 : x
2. Step 2: Convert to fraction form
   217,965.50/461,860 = 461,860/x
3. Step 3: Cross multiply
   217,965.50x = 461,860 × 461,860
4. Step 4: Simplify right side
   217,965.50x = 213,314,659,600
5. Step 5: Solve for x
   x = 213,314,659,600/217,965.50
6. Step 6: Final answer
   x = 978,662.49