Finding the Third Proportional to 65,099 and 87,078

Step by Step Solution

1. Step 1: Write the proportion equation
   65,099 : 87,078 = 87,078 : x
2. Step 2: Convert to fraction form
   65,099/87,078 = 87,078/x
3. Step 3: Cross multiply
   65,099x = 87,078 × 87,078
4. Step 4: Simplify right side
   65,099x = 7,582,578,084
5. Step 5: Solve for x
   x = 7,582,578,084/65,099
6. Step 6: Final answer
   x = 116,477.64