Finding the Third Proportional to 54,607 and 86,828.50

Step by Step Solution

1. Step 1: Write the proportion equation
   54,607 : 86,828.50 = 86,828.50 : x
2. Step 2: Convert to fraction form
   54,607/86,828.50 = 86,828.50/x
3. Step 3: Cross multiply
   54,607x = 86,828.50 × 86,828.50
4. Step 4: Simplify right side
   54,607x = 7,539,188,412.25
5. Step 5: Solve for x
   x = 7,539,188,412.25/54,607
6. Step 6: Final answer
   x = 138,062.67