Finding the Third Proportional to 353,654 and 540,810

Step by Step Solution

1. Step 1: Write the proportion equation
   353,654 : 540,810 = 540,810 : x
2. Step 2: Convert to fraction form
   353,654/540,810 = 540,810/x
3. Step 3: Cross multiply
   353,654x = 540,810 × 540,810
4. Step 4: Simplify right side
   353,654x = 292,475,456,100
5. Step 5: Solve for x
   x = 292,475,456,100/353,654
6. Step 6: Final answer
   x = 827,010.17