Finding the Third Proportional to 191,532 and 388,536

Step by Step Solution

1. Step 1: Write the proportion equation
   191,532 : 388,536 = 388,536 : x
2. Step 2: Convert to fraction form
   191,532/388,536 = 388,536/x
3. Step 3: Cross multiply
   191,532x = 388,536 × 388,536
4. Step 4: Simplify right side
   191,532x = 150,960,223,296
5. Step 5: Solve for x
   x = 150,960,223,296/191,532
6. Step 6: Final answer
   x = 788,172.33