Finding the Third Proportional to 103,160 and 139,187

Step by Step Solution

1. Step 1: Write the proportion equation
   103,160 : 139,187 = 139,187 : x
2. Step 2: Convert to fraction form
   103,160/139,187 = 139,187/x
3. Step 3: Cross multiply
   103,160x = 139,187 × 139,187
4. Step 4: Simplify right side
   103,160x = 19,373,020,969
5. Step 5: Solve for x
   x = 19,373,020,969/103,160
6. Step 6: Final answer
   x = 187,795.86