Finding the Third Proportional to 217,490 and 477,532

Step by Step Solution

1. Step 1: Write the proportion equation
   217,490 : 477,532 = 477,532 : x
2. Step 2: Convert to fraction form
   217,490/477,532 = 477,532/x
3. Step 3: Cross multiply
   217,490x = 477,532 × 477,532
4. Step 4: Simplify right side
   217,490x = 228,036,811,024
5. Step 5: Solve for x
   x = 228,036,811,024/217,490
6. Step 6: Final answer
   x = 1,048,493.31