Finding the Third Proportional to 221,688 and 474,882

Step by Step Solution

1. Step 1: Write the proportion equation
   221,688 : 474,882 = 474,882 : x
2. Step 2: Convert to fraction form
   221,688/474,882 = 474,882/x
3. Step 3: Cross multiply
   221,688x = 474,882 × 474,882
4. Step 4: Simplify right side
   221,688x = 225,512,913,924
5. Step 5: Solve for x
   x = 225,512,913,924/221,688
6. Step 6: Final answer
   x = 1,017,253.59