Finding the Third Proportional to 191,546 and 388,560

Step by Step Solution

1. Step 1: Write the proportion equation
   191,546 : 388,560 = 388,560 : x
2. Step 2: Convert to fraction form
   191,546/388,560 = 388,560/x
3. Step 3: Cross multiply
   191,546x = 388,560 × 388,560
4. Step 4: Simplify right side
   191,546x = 150,978,873,600
5. Step 5: Solve for x
   x = 150,978,873,600/191,546
6. Step 6: Final answer
   x = 788,212.09