Finding the Third Proportional to 58,065 and 89,716.50

Step by Step Solution

1. Step 1: Write the proportion equation
   58,065 : 89,716.50 = 89,716.50 : x
2. Step 2: Convert to fraction form
   58,065/89,716.50 = 89,716.50/x
3. Step 3: Cross multiply
   58,065x = 89,716.50 × 89,716.50
4. Step 4: Simplify right side
   58,065x = 8,049,050,372.25
5. Step 5: Solve for x
   x = 8,049,050,372.25/58,065
6. Step 6: Final answer
   x = 138,621.38