Finding the Third Proportional to 45,428.25 and 69,729.75

Step by Step Solution

1. Step 1: Write the proportion equation
   45,428.25 : 69,729.75 = 69,729.75 : x
2. Step 2: Convert to fraction form
   45,428.25/69,729.75 = 69,729.75/x
3. Step 3: Cross multiply
   45,428.25x = 69,729.75 × 69,729.75
4. Step 4: Simplify right side
   45,428.25x = 4,862,238,035.06
5. Step 5: Solve for x
   x = 4,862,238,035.06/45,428.25
6. Step 6: Final answer
   x = 107,031.15