Finding the Third Proportional to 98,629 and 215,710

Step by Step Solution

1. Step 1: Write the proportion equation
   98,629 : 215,710 = 215,710 : x
2. Step 2: Convert to fraction form
   98,629/215,710 = 215,710/x
3. Step 3: Cross multiply
   98,629x = 215,710 × 215,710
4. Step 4: Simplify right side
   98,629x = 46,530,804,100
5. Step 5: Solve for x
   x = 46,530,804,100/98,629
6. Step 6: Final answer
   x = 471,776.09