Finding the Third Proportional to 81,904.50 and 178,632

Step by Step Solution

1. Step 1: Write the proportion equation
   81,904.50 : 178,632 = 178,632 : x
2. Step 2: Convert to fraction form
   81,904.50/178,632 = 178,632/x
3. Step 3: Cross multiply
   81,904.50x = 178,632 × 178,632
4. Step 4: Simplify right side
   81,904.50x = 31,909,391,424
5. Step 5: Solve for x
   x = 31,909,391,424/81,904.50
6. Step 6: Final answer
   x = 389,592.65