Finding the Third Proportional to 171,693.50 and 371,988

Step by Step Solution

1. Step 1: Write the proportion equation
   171,693.50 : 371,988 = 371,988 : x
2. Step 2: Convert to fraction form
   171,693.50/371,988 = 371,988/x
3. Step 3: Cross multiply
   171,693.50x = 371,988 × 371,988
4. Step 4: Simplify right side
   171,693.50x = 138,375,072,144
5. Step 5: Solve for x
   x = 138,375,072,144/171,693.50
6. Step 6: Final answer
   x = 805,942.40