Finding the Third Proportional to 216,432 and 469,830

Step by Step Solution

1. Step 1: Write the proportion equation
   216,432 : 469,830 = 469,830 : x
2. Step 2: Convert to fraction form
   216,432/469,830 = 469,830/x
3. Step 3: Cross multiply
   216,432x = 469,830 × 469,830
4. Step 4: Simplify right side
   216,432x = 220,740,228,900
5. Step 5: Solve for x
   x = 220,740,228,900/216,432
6. Step 6: Final answer
   x = 1,019,905.69