Finding the Third Proportional to 30,569.91 and 64,455.75

Step by Step Solution

1. Step 1: Write the proportion equation
   30,569.91 : 64,455.75 = 64,455.75 : x
2. Step 2: Convert to fraction form
   30,569.91/64,455.75 = 64,455.75/x
3. Step 3: Cross multiply
   30,569.91x = 64,455.75 × 64,455.75
4. Step 4: Simplify right side
   30,569.91x = 4,154,543,708.06
5. Step 5: Solve for x
   x = 4,154,543,708.06/30,569.91
6. Step 6: Final answer
   x = 135,903.06