Finding the Third Proportional to 221,820 and 341,298

Step by Step Solution

1. Step 1: Write the proportion equation
   221,820 : 341,298 = 341,298 : x
2. Step 2: Convert to fraction form
   221,820/341,298 = 341,298/x
3. Step 3: Cross multiply
   221,820x = 341,298 × 341,298
4. Step 4: Simplify right side
   221,820x = 116,484,324,804
5. Step 5: Solve for x
   x = 116,484,324,804/221,820
6. Step 6: Final answer
   x = 525,129.95