Finding the Third Proportional to 221,964 and 485,382

Step by Step Solution

1. Step 1: Write the proportion equation
   221,964 : 485,382 = 485,382 : x
2. Step 2: Convert to fraction form
   221,964/485,382 = 485,382/x
3. Step 3: Cross multiply
   221,964x = 485,382 × 485,382
4. Step 4: Simplify right side
   221,964x = 235,595,685,924
5. Step 5: Solve for x
   x = 235,595,685,924/221,964
6. Step 6: Final answer
   x = 1,061,413.95