Finding the Third Proportional to 83,112 and 178,131

Step by Step Solution

1. Step 1: Write the proportion equation
   83,112 : 178,131 = 178,131 : x
2. Step 2: Convert to fraction form
   83,112/178,131 = 178,131/x
3. Step 3: Cross multiply
   83,112x = 178,131 × 178,131
4. Step 4: Simplify right side
   83,112x = 31,730,653,161
5. Step 5: Solve for x
   x = 31,730,653,161/83,112
6. Step 6: Final answer
   x = 381,781.85