Finding the Third Proportional to 177,222 and 388,891.50

Step by Step Solution

1. Step 1: Write the proportion equation
   177,222 : 388,891.50 = 388,891.50 : x
2. Step 2: Convert to fraction form
   177,222/388,891.50 = 388,891.50/x
3. Step 3: Cross multiply
   177,222x = 388,891.50 × 388,891.50
4. Step 4: Simplify right side
   177,222x = 151,236,598,772.25
5. Step 5: Solve for x
   x = 151,236,598,772.25/177,222
6. Step 6: Final answer
   x = 853,373.73