Finding the Third Proportional to 218,368 and 477,470

Step by Step Solution

1. Step 1: Write the proportion equation
   218,368 : 477,470 = 477,470 : x
2. Step 2: Convert to fraction form
   218,368/477,470 = 477,470/x
3. Step 3: Cross multiply
   218,368x = 477,470 × 477,470
4. Step 4: Simplify right side
   218,368x = 227,977,600,900
5. Step 5: Solve for x
   x = 227,977,600,900/218,368
6. Step 6: Final answer
   x = 1,044,006.45