Finding the Third Proportional to 99,804 and 215,160

Step by Step Solution

1. Step 1: Write the proportion equation
   99,804 : 215,160 = 215,160 : x
2. Step 2: Convert to fraction form
   99,804/215,160 = 215,160/x
3. Step 3: Cross multiply
   99,804x = 215,160 × 215,160
4. Step 4: Simplify right side
   99,804x = 46,293,825,600
5. Step 5: Solve for x
   x = 46,293,825,600/99,804
6. Step 6: Final answer
   x = 463,847.40