Finding the Third Proportional to 99,868.50 and 214,425

Step by Step Solution

1. Step 1: Write the proportion equation
   99,868.50 : 214,425 = 214,425 : x
2. Step 2: Convert to fraction form
   99,868.50/214,425 = 214,425/x
3. Step 3: Cross multiply
   99,868.50x = 214,425 × 214,425
4. Step 4: Simplify right side
   99,868.50x = 45,978,080,625
5. Step 5: Solve for x
   x = 45,978,080,625/99,868.50
6. Step 6: Final answer
   x = 460,386.21