Finding the Third Proportional to 86,913 and 89,363.25

Step by Step Solution

1. Step 1: Write the proportion equation
   86,913 : 89,363.25 = 89,363.25 : x
2. Step 2: Convert to fraction form
   86,913/89,363.25 = 89,363.25/x
3. Step 3: Cross multiply
   86,913x = 89,363.25 × 89,363.25
4. Step 4: Simplify right side
   86,913x = 7,985,790,450.56
5. Step 5: Solve for x
   x = 7,985,790,450.56/86,913
6. Step 6: Final answer
   x = 91,882.58