Finding the Third Proportional to 218,358 and 477,450

Step by Step Solution

1. Step 1: Write the proportion equation
   218,358 : 477,450 = 477,450 : x
2. Step 2: Convert to fraction form
   218,358/477,450 = 477,450/x
3. Step 3: Cross multiply
   218,358x = 477,450 × 477,450
4. Step 4: Simplify right side
   218,358x = 227,958,502,500
5. Step 5: Solve for x
   x = 227,958,502,500/218,358
6. Step 6: Final answer
   x = 1,043,966.80