Finding the Third Proportional to 99,449.50 and 214,785.50

Step by Step Solution

1. Step 1: Write the proportion equation
   99,449.50 : 214,785.50 = 214,785.50 : x
2. Step 2: Convert to fraction form
   99,449.50/214,785.50 = 214,785.50/x
3. Step 3: Cross multiply
   99,449.50x = 214,785.50 × 214,785.50
4. Step 4: Simplify right side
   99,449.50x = 46,132,811,010.25
5. Step 5: Solve for x
   x = 46,132,811,010.25/99,449.50
6. Step 6: Final answer
   x = 463,881.78