Finding the Third Proportional to 99,743.63 and 213,500.25

Step by Step Solution

1. Step 1: Write the proportion equation
   99,743.63 : 213,500.25 = 213,500.25 : x
2. Step 2: Convert to fraction form
   99,743.63/213,500.25 = 213,500.25/x
3. Step 3: Cross multiply
   99,743.63x = 213,500.25 × 213,500.25
4. Step 4: Simplify right side
   99,743.63x = 45,582,356,750.06
5. Step 5: Solve for x
   x = 45,582,356,750.06/99,743.63
6. Step 6: Final answer
   x = 456,995.19