Finding the Third Proportional to 191,240 and 415,648

Step by Step Solution

1. Step 1: Write the proportion equation
   191,240 : 415,648 = 415,648 : x
2. Step 2: Convert to fraction form
   191,240/415,648 = 415,648/x
3. Step 3: Cross multiply
   191,240x = 415,648 × 415,648
4. Step 4: Simplify right side
   191,240x = 172,763,259,904
5. Step 5: Solve for x
   x = 172,763,259,904/191,240
6. Step 6: Final answer
   x = 903,384.54