Finding the Third Proportional to 87,478.59 and 178,648.03

Step by Step Solution

1. Step 1: Write the proportion equation
   87,478.59 : 178,648.03 = 178,648.03 : x
2. Step 2: Convert to fraction form
   87,478.59/178,648.03 = 178,648.03/x
3. Step 3: Cross multiply
   87,478.59x = 178,648.03 × 178,648.03
4. Step 4: Simplify right side
   87,478.59x = 31,915,119,069.50
5. Step 5: Solve for x
   x = 31,915,119,069.50/87,478.59
6. Step 6: Final answer
   x = 364,833.47