Finding the Third Proportional to 99,064.50 and 215,805

Step by Step Solution

1. Step 1: Write the proportion equation
   99,064.50 : 215,805 = 215,805 : x
2. Step 2: Convert to fraction form
   99,064.50/215,805 = 215,805/x
3. Step 3: Cross multiply
   99,064.50x = 215,805 × 215,805
4. Step 4: Simplify right side
   99,064.50x = 46,571,798,025
5. Step 5: Solve for x
   x = 46,571,798,025/99,064.50
6. Step 6: Final answer
   x = 470,115.91