Finding the Third Proportional to 92,870 and 139,516

Step by Step Solution

1. Step 1: Write the proportion equation
   92,870 : 139,516 = 139,516 : x
2. Step 2: Convert to fraction form
   92,870/139,516 = 139,516/x
3. Step 3: Cross multiply
   92,870x = 139,516 × 139,516
4. Step 4: Simplify right side
   92,870x = 19,464,714,256
5. Step 5: Solve for x
   x = 19,464,714,256/92,870
6. Step 6: Final answer
   x = 209,590.98