Finding the Third Proportional to 272,940 and 401,608

Step by Step Solution

1. Step 1: Write the proportion equation
   272,940 : 401,608 = 401,608 : x
2. Step 2: Convert to fraction form
   272,940/401,608 = 401,608/x
3. Step 3: Cross multiply
   272,940x = 401,608 × 401,608
4. Step 4: Simplify right side
   272,940x = 161,288,985,664
5. Step 5: Solve for x
   x = 161,288,985,664/272,940
6. Step 6: Final answer
   x = 590,932.02