Finding the Third Proportional to 406,692 and 613,238

Step by Step Solution

1. Step 1: Write the proportion equation
   406,692 : 613,238 = 613,238 : x
2. Step 2: Convert to fraction form
   406,692/613,238 = 613,238/x
3. Step 3: Cross multiply
   406,692x = 613,238 × 613,238
4. Step 4: Simplify right side
   406,692x = 376,060,844,644
5. Step 5: Solve for x
   x = 376,060,844,644/406,692
6. Step 6: Final answer
   x = 924,682.18