Finding the Third Proportional to 60,486 and 89,865

Step by Step Solution

1. Step 1: Write the proportion equation
   60,486 : 89,865 = 89,865 : x
2. Step 2: Convert to fraction form
   60,486/89,865 = 89,865/x
3. Step 3: Cross multiply
   60,486x = 89,865 × 89,865
4. Step 4: Simplify right side
   60,486x = 8,075,718,225
5. Step 5: Solve for x
   x = 8,075,718,225/60,486
6. Step 6: Final answer
   x = 133,513.84