Finding the Third Proportional to 216,864 and 469,928

Step by Step Solution

1. Step 1: Write the proportion equation
   216,864 : 469,928 = 469,928 : x
2. Step 2: Convert to fraction form
   216,864/469,928 = 469,928/x
3. Step 3: Cross multiply
   216,864x = 469,928 × 469,928
4. Step 4: Simplify right side
   216,864x = 220,832,325,184
5. Step 5: Solve for x
   x = 220,832,325,184/216,864
6. Step 6: Final answer
   x = 1,018,298.68