Finding the Third Proportional to 358,040 and 501,906

Step by Step Solution

1. Step 1: Write the proportion equation
   358,040 : 501,906 = 501,906 : x
2. Step 2: Convert to fraction form
   358,040/501,906 = 501,906/x
3. Step 3: Cross multiply
   358,040x = 501,906 × 501,906
4. Step 4: Simplify right side
   358,040x = 251,909,632,836
5. Step 5: Solve for x
   x = 251,909,632,836/358,040
6. Step 6: Final answer
   x = 703,579.58