Finding the Third Proportional to 92,742 and 139,979

Step by Step Solution

1. Step 1: Write the proportion equation
   92,742 : 139,979 = 139,979 : x
2. Step 2: Convert to fraction form
   92,742/139,979 = 139,979/x
3. Step 3: Cross multiply
   92,742x = 139,979 × 139,979
4. Step 4: Simplify right side
   92,742x = 19,594,120,441
5. Step 5: Solve for x
   x = 19,594,120,441/92,742
6. Step 6: Final answer
   x = 211,275.59