Finding the Third Proportional to 55,109 and 117,428

Step by Step Solution

1. Step 1: Write the proportion equation
   55,109 : 117,428 = 117,428 : x
2. Step 2: Convert to fraction form
   55,109/117,428 = 117,428/x
3. Step 3: Cross multiply
   55,109x = 117,428 × 117,428
4. Step 4: Simplify right side
   55,109x = 13,789,335,184
5. Step 5: Solve for x
   x = 13,789,335,184/55,109
6. Step 6: Final answer
   x = 250,219.30