Finding the Third Proportional to 38,613 and 70,819

Step by Step Solution

1. Step 1: Write the proportion equation
   38,613 : 70,819 = 70,819 : x
2. Step 2: Convert to fraction form
   38,613/70,819 = 70,819/x
3. Step 3: Cross multiply
   38,613x = 70,819 × 70,819
4. Step 4: Simplify right side
   38,613x = 5,015,330,761
5. Step 5: Solve for x
   x = 5,015,330,761/38,613
6. Step 6: Final answer
   x = 129,887.10