Finding the Third Proportional to 30,919.50 and 60,781.50

Step by Step Solution

1. Step 1: Write the proportion equation
   30,919.50 : 60,781.50 = 60,781.50 : x
2. Step 2: Convert to fraction form
   30,919.50/60,781.50 = 60,781.50/x
3. Step 3: Cross multiply
   30,919.50x = 60,781.50 × 60,781.50
4. Step 4: Simplify right side
   30,919.50x = 3,694,390,742.25
5. Step 5: Solve for x
   x = 3,694,390,742.25/30,919.50
6. Step 6: Final answer
   x = 119,484.17