Finding the Third Proportional to 30,119 and 64,819

Step by Step Solution

1. Step 1: Write the proportion equation
   30,119 : 64,819 = 64,819 : x
2. Step 2: Convert to fraction form
   30,119/64,819 = 64,819/x
3. Step 3: Cross multiply
   30,119x = 64,819 × 64,819
4. Step 4: Simplify right side
   30,119x = 4,201,502,761
5. Step 5: Solve for x
   x = 4,201,502,761/30,119
6. Step 6: Final answer
   x = 139,496.75