Finding the Third Proportional to 30,607.50 and 62,860.50

Step by Step Solution

1. Step 1: Write the proportion equation
   30,607.50 : 62,860.50 = 62,860.50 : x
2. Step 2: Convert to fraction form
   30,607.50/62,860.50 = 62,860.50/x
3. Step 3: Cross multiply
   30,607.50x = 62,860.50 × 62,860.50
4. Step 4: Simplify right side
   30,607.50x = 3,951,442,460.25
5. Step 5: Solve for x
   x = 3,951,442,460.25/30,607.50
6. Step 6: Final answer
   x = 129,100.46