Finding the Third Proportional to 104,130 and 215,640

Step by Step Solution

1. Step 1: Write the proportion equation
   104,130 : 215,640 = 215,640 : x
2. Step 2: Convert to fraction form
   104,130/215,640 = 215,640/x
3. Step 3: Cross multiply
   104,130x = 215,640 × 215,640
4. Step 4: Simplify right side
   104,130x = 46,500,609,600
5. Step 5: Solve for x
   x = 46,500,609,600/104,130
6. Step 6: Final answer
   x = 446,563.04