Finding the Third Proportional to 42,309 and 65,297.81

Step by Step Solution

1. Step 1: Write the proportion equation
   42,309 : 65,297.81 = 65,297.81 : x
2. Step 2: Convert to fraction form
   42,309/65,297.81 = 65,297.81/x
3. Step 3: Cross multiply
   42,309x = 65,297.81 × 65,297.81
4. Step 4: Simplify right side
   42,309x = 4,263,804,317.29
5. Step 5: Solve for x
   x = 4,263,804,317.29/42,309
6. Step 6: Final answer
   x = 100,777.71