Finding the Third Proportional to 92,409 and 139,270.50

Step by Step Solution

1. Step 1: Write the proportion equation
   92,409 : 139,270.50 = 139,270.50 : x
2. Step 2: Convert to fraction form
   92,409/139,270.50 = 139,270.50/x
3. Step 3: Cross multiply
   92,409x = 139,270.50 × 139,270.50
4. Step 4: Simplify right side
   92,409x = 19,396,272,170.25
5. Step 5: Solve for x
   x = 19,396,272,170.25/92,409
6. Step 6: Final answer
   x = 209,895.92