Finding the Third Proportional to 215,726 and 470,380

Step by Step Solution

1. Step 1: Write the proportion equation
   215,726 : 470,380 = 470,380 : x
2. Step 2: Convert to fraction form
   215,726/470,380 = 470,380/x
3. Step 3: Cross multiply
   215,726x = 470,380 × 470,380
4. Step 4: Simplify right side
   215,726x = 221,257,344,400
5. Step 5: Solve for x
   x = 221,257,344,400/215,726
6. Step 6: Final answer
   x = 1,025,640.60