Finding the Third Proportional to 59,859 and 89,788.50

Step by Step Solution

1. Step 1: Write the proportion equation
   59,859 : 89,788.50 = 89,788.50 : x
2. Step 2: Convert to fraction form
   59,859/89,788.50 = 89,788.50/x
3. Step 3: Cross multiply
   59,859x = 89,788.50 × 89,788.50
4. Step 4: Simplify right side
   59,859x = 8,061,974,732.25
5. Step 5: Solve for x
   x = 8,061,974,732.25/59,859
6. Step 6: Final answer
   x = 134,682.75