Finding the Third Proportional to 54,495 and 86,764.50

Step by Step Solution

1. Step 1: Write the proportion equation
   54,495 : 86,764.50 = 86,764.50 : x
2. Step 2: Convert to fraction form
   54,495/86,764.50 = 86,764.50/x
3. Step 3: Cross multiply
   54,495x = 86,764.50 × 86,764.50
4. Step 4: Simplify right side
   54,495x = 7,528,078,460.25
5. Step 5: Solve for x
   x = 7,528,078,460.25/54,495
6. Step 6: Final answer
   x = 138,142.55