Finding the Third Proportional to 87,858 and 116,788.50

Step by Step Solution

1. Step 1: Write the proportion equation
   87,858 : 116,788.50 = 116,788.50 : x
2. Step 2: Convert to fraction form
   87,858/116,788.50 = 116,788.50/x
3. Step 3: Cross multiply
   87,858x = 116,788.50 × 116,788.50
4. Step 4: Simplify right side
   87,858x = 13,639,553,732.25
5. Step 5: Solve for x
   x = 13,639,553,732.25/87,858
6. Step 6: Final answer
   x = 155,245.44