Finding the Third Proportional to 30,298 and 64,916

Step by Step Solution

1. Step 1: Write the proportion equation
   30,298 : 64,916 = 64,916 : x
2. Step 2: Convert to fraction form
   30,298/64,916 = 64,916/x
3. Step 3: Cross multiply
   30,298x = 64,916 × 64,916
4. Step 4: Simplify right side
   30,298x = 4,214,087,056
5. Step 5: Solve for x
   x = 4,214,087,056/30,298
6. Step 6: Final answer
   x = 139,087.96