Finding the Third Proportional to 98,810 and 216,360

Step by Step Solution

1. Step 1: Write the proportion equation
   98,810 : 216,360 = 216,360 : x
2. Step 2: Convert to fraction form
   98,810/216,360 = 216,360/x
3. Step 3: Cross multiply
   98,810x = 216,360 × 216,360
4. Step 4: Simplify right side
   98,810x = 46,811,649,600
5. Step 5: Solve for x
   x = 46,811,649,600/98,810
6. Step 6: Final answer
   x = 473,754.17