Finding the Third Proportional to 171,243 and 371,666.50

Step by Step Solution

1. Step 1: Write the proportion equation
   171,243 : 371,666.50 = 371,666.50 : x
2. Step 2: Convert to fraction form
   171,243/371,666.50 = 371,666.50/x
3. Step 3: Cross multiply
   171,243x = 371,666.50 × 371,666.50
4. Step 4: Simplify right side
   171,243x = 138,135,987,222.25
5. Step 5: Solve for x
   x = 138,135,987,222.25/171,243
6. Step 6: Final answer
   x = 806,666.48