Finding the Third Proportional to 343,290 and 525,144

Step by Step Solution

1. Step 1: Write the proportion equation
   343,290 : 525,144 = 525,144 : x
2. Step 2: Convert to fraction form
   343,290/525,144 = 525,144/x
3. Step 3: Cross multiply
   343,290x = 525,144 × 525,144
4. Step 4: Simplify right side
   343,290x = 275,776,220,736
5. Step 5: Solve for x
   x = 275,776,220,736/343,290
6. Step 6: Final answer
   x = 803,333.10