Finding the Third Proportional to 57,158 and 86,876.50

Step by Step Solution

1. Step 1: Write the proportion equation
   57,158 : 86,876.50 = 86,876.50 : x
2. Step 2: Convert to fraction form
   57,158/86,876.50 = 86,876.50/x
3. Step 3: Cross multiply
   57,158x = 86,876.50 × 86,876.50
4. Step 4: Simplify right side
   57,158x = 7,547,526,252.25
5. Step 5: Solve for x
   x = 7,547,526,252.25/57,158
6. Step 6: Final answer
   x = 132,046.72