Finding the Third Proportional to 218,688 and 470,916

Step by Step Solution

1. Step 1: Write the proportion equation
   218,688 : 470,916 = 470,916 : x
2. Step 2: Convert to fraction form
   218,688/470,916 = 470,916/x
3. Step 3: Cross multiply
   218,688x = 470,916 × 470,916
4. Step 4: Simplify right side
   218,688x = 221,761,879,056
5. Step 5: Solve for x
   x = 221,761,879,056/218,688
6. Step 6: Final answer
   x = 1,014,056.00