Finding the Third Proportional to 191,540.50 and 388,553

Step by Step Solution

1. Step 1: Write the proportion equation
   191,540.50 : 388,553 = 388,553 : x
2. Step 2: Convert to fraction form
   191,540.50/388,553 = 388,553/x
3. Step 3: Cross multiply
   191,540.50x = 388,553 × 388,553
4. Step 4: Simplify right side
   191,540.50x = 150,973,433,809
5. Step 5: Solve for x
   x = 150,973,433,809/191,540.50
6. Step 6: Final answer
   x = 788,206.33