Finding the Third Proportional to 30,297.50 and 64,807

Step by Step Solution

1. Step 1: Write the proportion equation
   30,297.50 : 64,807 = 64,807 : x
2. Step 2: Convert to fraction form
   30,297.50/64,807 = 64,807/x
3. Step 3: Cross multiply
   30,297.50x = 64,807 × 64,807
4. Step 4: Simplify right side
   30,297.50x = 4,199,947,249
5. Step 5: Solve for x
   x = 4,199,947,249/30,297.50
6. Step 6: Final answer
   x = 138,623.56