Finding the Third Proportional to 191,533.50 and 388,539

Step by Step Solution

1. Step 1: Write the proportion equation
   191,533.50 : 388,539 = 388,539 : x
2. Step 2: Convert to fraction form
   191,533.50/388,539 = 388,539/x
3. Step 3: Cross multiply
   191,533.50x = 388,539 × 388,539
4. Step 4: Simplify right side
   191,533.50x = 150,962,554,521
5. Step 5: Solve for x
   x = 150,962,554,521/191,533.50
6. Step 6: Final answer
   x = 788,178.33