Finding the Third Proportional to 168,561 and 371,020.50

Step by Step Solution

1. Step 1: Write the proportion equation
   168,561 : 371,020.50 = 371,020.50 : x
2. Step 2: Convert to fraction form
   168,561/371,020.50 = 371,020.50/x
3. Step 3: Cross multiply
   168,561x = 371,020.50 × 371,020.50
4. Step 4: Simplify right side
   168,561x = 137,656,211,420.25
5. Step 5: Solve for x
   x = 137,656,211,420.25/168,561
6. Step 6: Final answer
   x = 816,655.17