Finding the Third Proportional to 191,522 and 388,516

Step by Step Solution

1. Step 1: Write the proportion equation
   191,522 : 388,516 = 388,516 : x
2. Step 2: Convert to fraction form
   191,522/388,516 = 388,516/x
3. Step 3: Cross multiply
   191,522x = 388,516 × 388,516
4. Step 4: Simplify right side
   191,522x = 150,944,682,256
5. Step 5: Solve for x
   x = 150,944,682,256/191,522
6. Step 6: Final answer
   x = 788,132.34