Finding the Third Proportional to 33,788.25 and 69,718.50

Step by Step Solution

1. Step 1: Write the proportion equation
   33,788.25 : 69,718.50 = 69,718.50 : x
2. Step 2: Convert to fraction form
   33,788.25/69,718.50 = 69,718.50/x
3. Step 3: Cross multiply
   33,788.25x = 69,718.50 × 69,718.50
4. Step 4: Simplify right side
   33,788.25x = 4,860,669,242.25
5. Step 5: Solve for x
   x = 4,860,669,242.25/33,788.25
6. Step 6: Final answer
   x = 143,856.79