Finding the Third Proportional to 172,480.50 and 371,191.50

Step by Step Solution

1. Step 1: Write the proportion equation
   172,480.50 : 371,191.50 = 371,191.50 : x
2. Step 2: Convert to fraction form
   172,480.50/371,191.50 = 371,191.50/x
3. Step 3: Cross multiply
   172,480.50x = 371,191.50 × 371,191.50
4. Step 4: Simplify right side
   172,480.50x = 137,783,129,672.25
5. Step 5: Solve for x
   x = 137,783,129,672.25/172,480.50
6. Step 6: Final answer
   x = 798,833.08