Finding the Third Proportional to 55,448.30 and 86,868.70

Step by Step Solution

1. Step 1: Write the proportion equation
   55,448.30 : 86,868.70 = 86,868.70 : x
2. Step 2: Convert to fraction form
   55,448.30/86,868.70 = 86,868.70/x
3. Step 3: Cross multiply
   55,448.30x = 86,868.70 × 86,868.70
4. Step 4: Simplify right side
   55,448.30x = 7,546,171,582.62
5. Step 5: Solve for x
   x = 7,546,171,582.62/55,448.30
6. Step 6: Final answer
   x = 136,093.84