Finding the Third Proportional to 81,963 and 178,819.50

Step by Step Solution

1. Step 1: Write the proportion equation
   81,963 : 178,819.50 = 178,819.50 : x
2. Step 2: Convert to fraction form
   81,963/178,819.50 = 178,819.50/x
3. Step 3: Cross multiply
   81,963x = 178,819.50 × 178,819.50
4. Step 4: Simplify right side
   81,963x = 31,976,413,580.25
5. Step 5: Solve for x
   x = 31,976,413,580.25/81,963
6. Step 6: Final answer
   x = 390,132.30