Finding the Third Proportional to 30,511 and 62,904.50

Step by Step Solution

1. Step 1: Write the proportion equation
   30,511 : 62,904.50 = 62,904.50 : x
2. Step 2: Convert to fraction form
   30,511/62,904.50 = 62,904.50/x
3. Step 3: Cross multiply
   30,511x = 62,904.50 × 62,904.50
4. Step 4: Simplify right side
   30,511x = 3,956,976,120.25
5. Step 5: Solve for x
   x = 3,956,976,120.25/30,511
6. Step 6: Final answer
   x = 129,690.15