Finding the Third Proportional to 92,890.55 and 139,273.17

Step by Step Solution

1. Step 1: Write the proportion equation
   92,890.55 : 139,273.17 = 139,273.17 : x
2. Step 2: Convert to fraction form
   92,890.55/139,273.17 = 139,273.17/x
3. Step 3: Cross multiply
   92,890.55x = 139,273.17 × 139,273.17
4. Step 4: Simplify right side
   92,890.55x = 19,397,016,404.12
5. Step 5: Solve for x
   x = 19,397,016,404.12/92,890.55
6. Step 6: Final answer
   x = 208,815.83