Finding the Third Proportional to 92,900 and 139,560

Step by Step Solution

1. Step 1: Write the proportion equation
   92,900 : 139,560 = 139,560 : x
2. Step 2: Convert to fraction form
   92,900/139,560 = 139,560/x
3. Step 3: Cross multiply
   92,900x = 139,560 × 139,560
4. Step 4: Simplify right side
   92,900x = 19,476,993,600
5. Step 5: Solve for x
   x = 19,476,993,600/92,900
6. Step 6: Final answer
   x = 209,655.47