Finding the Third Proportional to 215,510 and 471,148

Step by Step Solution

1. Step 1: Write the proportion equation
   215,510 : 471,148 = 471,148 : x
2. Step 2: Convert to fraction form
   215,510/471,148 = 471,148/x
3. Step 3: Cross multiply
   215,510x = 471,148 × 471,148
4. Step 4: Simplify right side
   215,510x = 221,980,437,904
5. Step 5: Solve for x
   x = 221,980,437,904/215,510
6. Step 6: Final answer
   x = 1,030,023.84