Finding the Third Proportional to 221,522 and 343,650

Step by Step Solution

1. Step 1: Write the proportion equation
   221,522 : 343,650 = 343,650 : x
2. Step 2: Convert to fraction form
   221,522/343,650 = 343,650/x
3. Step 3: Cross multiply
   221,522x = 343,650 × 343,650
4. Step 4: Simplify right side
   221,522x = 118,095,322,500
5. Step 5: Solve for x
   x = 118,095,322,500/221,522
6. Step 6: Final answer
   x = 533,108.78