Finding the Third Proportional to 177,607.50 and 371,631

Step by Step Solution

1. Step 1: Write the proportion equation
   177,607.50 : 371,631 = 371,631 : x
2. Step 2: Convert to fraction form
   177,607.50/371,631 = 371,631/x
3. Step 3: Cross multiply
   177,607.50x = 371,631 × 371,631
4. Step 4: Simplify right side
   177,607.50x = 138,109,600,161
5. Step 5: Solve for x
   x = 138,109,600,161/177,607.50
6. Step 6: Final answer
   x = 777,611.31