Finding the Third Proportional to 191,550 and 388,572

Step by Step Solution

1. Step 1: Write the proportion equation
   191,550 : 388,572 = 388,572 : x
2. Step 2: Convert to fraction form
   191,550/388,572 = 388,572/x
3. Step 3: Cross multiply
   191,550x = 388,572 × 388,572
4. Step 4: Simplify right side
   191,550x = 150,988,199,184
5. Step 5: Solve for x
   x = 150,988,199,184/191,550
6. Step 6: Final answer
   x = 788,244.32