Finding the Third Proportional to 221,908 and 485,334

Step by Step Solution

1. Step 1: Write the proportion equation
   221,908 : 485,334 = 485,334 : x
2. Step 2: Convert to fraction form
   221,908/485,334 = 485,334/x
3. Step 3: Cross multiply
   221,908x = 485,334 × 485,334
4. Step 4: Simplify right side
   221,908x = 235,549,091,556
5. Step 5: Solve for x
   x = 235,549,091,556/221,908
6. Step 6: Final answer
   x = 1,061,471.83