Finding the Third Proportional to 61,233.50 and 86,669.25

Step by Step Solution

1. Step 1: Write the proportion equation
   61,233.50 : 86,669.25 = 86,669.25 : x
2. Step 2: Convert to fraction form
   61,233.50/86,669.25 = 86,669.25/x
3. Step 3: Cross multiply
   61,233.50x = 86,669.25 × 86,669.25
4. Step 4: Simplify right side
   61,233.50x = 7,511,558,895.56
5. Step 5: Solve for x
   x = 7,511,558,895.56/61,233.50
6. Step 6: Final answer
   x = 122,670.74