Finding the Third Proportional to 221,419.50 and 343,794

Step by Step Solution

1. Step 1: Write the proportion equation
   221,419.50 : 343,794 = 343,794 : x
2. Step 2: Convert to fraction form
   221,419.50/343,794 = 343,794/x
3. Step 3: Cross multiply
   221,419.50x = 343,794 × 343,794
4. Step 4: Simplify right side
   221,419.50x = 118,194,314,436
5. Step 5: Solve for x
   x = 118,194,314,436/221,419.50
6. Step 6: Final answer
   x = 533,802.64