Finding the Third Proportional to 216,342 and 470,000

Step by Step Solution

1. Step 1: Write the proportion equation
   216,342 : 470,000 = 470,000 : x
2. Step 2: Convert to fraction form
   216,342/470,000 = 470,000/x
3. Step 3: Cross multiply
   216,342x = 470,000 × 470,000
4. Step 4: Simplify right side
   216,342x = 220,900,000,000
5. Step 5: Solve for x
   x = 220,900,000,000/216,342
6. Step 6: Final answer
   x = 1,021,068.49