Finding the Third Proportional to 59,115 and 91,579.50

Step by Step Solution

1. Step 1: Write the proportion equation
   59,115 : 91,579.50 = 91,579.50 : x
2. Step 2: Convert to fraction form
   59,115/91,579.50 = 91,579.50/x
3. Step 3: Cross multiply
   59,115x = 91,579.50 × 91,579.50
4. Step 4: Simplify right side
   59,115x = 8,386,804,820.25
5. Step 5: Solve for x
   x = 8,386,804,820.25/59,115
6. Step 6: Final answer
   x = 141,872.70