Finding the Third Proportional to 90,770 and 139,983

Step by Step Solution

1. Step 1: Write the proportion equation
   90,770 : 139,983 = 139,983 : x
2. Step 2: Convert to fraction form
   90,770/139,983 = 139,983/x
3. Step 3: Cross multiply
   90,770x = 139,983 × 139,983
4. Step 4: Simplify right side
   90,770x = 19,595,240,289
5. Step 5: Solve for x
   x = 19,595,240,289/90,770
6. Step 6: Final answer
   x = 215,877.94