Finding the Third Proportional to 57,339 and 86,873.50

Step by Step Solution

1. Step 1: Write the proportion equation
   57,339 : 86,873.50 = 86,873.50 : x
2. Step 2: Convert to fraction form
   57,339/86,873.50 = 86,873.50/x
3. Step 3: Cross multiply
   57,339x = 86,873.50 × 86,873.50
4. Step 4: Simplify right side
   57,339x = 7,547,005,002.25
5. Step 5: Solve for x
   x = 7,547,005,002.25/57,339
6. Step 6: Final answer
   x = 131,620.80