Finding the Third Proportional to 216,864 and 469,930.50

Step by Step Solution

1. Step 1: Write the proportion equation
   216,864 : 469,930.50 = 469,930.50 : x
2. Step 2: Convert to fraction form
   216,864/469,930.50 = 469,930.50/x
3. Step 3: Cross multiply
   216,864x = 469,930.50 × 469,930.50
4. Step 4: Simplify right side
   216,864x = 220,834,674,830.25
5. Step 5: Solve for x
   x = 220,834,674,830.25/216,864
6. Step 6: Final answer
   x = 1,018,309.52