Finding the Third Proportional to 177,781.50 and 388,773

Step by Step Solution

1. Step 1: Write the proportion equation
   177,781.50 : 388,773 = 388,773 : x
2. Step 2: Convert to fraction form
   177,781.50/388,773 = 388,773/x
3. Step 3: Cross multiply
   177,781.50x = 388,773 × 388,773
4. Step 4: Simplify right side
   177,781.50x = 151,144,445,529
5. Step 5: Solve for x
   x = 151,144,445,529/177,781.50
6. Step 6: Final answer
   x = 850,169.71