Finding the Third Proportional to 85,211.50 and 178,988

Step by Step Solution

1. Step 1: Write the proportion equation
   85,211.50 : 178,988 = 178,988 : x
2. Step 2: Convert to fraction form
   85,211.50/178,988 = 178,988/x
3. Step 3: Cross multiply
   85,211.50x = 178,988 × 178,988
4. Step 4: Simplify right side
   85,211.50x = 32,036,704,144
5. Step 5: Solve for x
   x = 32,036,704,144/85,211.50
6. Step 6: Final answer
   x = 375,966.91