Finding the Third Proportional to 57,858 and 87,403.50

Step by Step Solution

1. Step 1: Write the proportion equation
   57,858 : 87,403.50 = 87,403.50 : x
2. Step 2: Convert to fraction form
   57,858/87,403.50 = 87,403.50/x
3. Step 3: Cross multiply
   57,858x = 87,403.50 × 87,403.50
4. Step 4: Simplify right side
   57,858x = 7,639,371,812.25
5. Step 5: Solve for x
   x = 7,639,371,812.25/57,858
6. Step 6: Final answer
   x = 132,036.57