Finding the Third Proportional to 55,890.50 and 84,558

Step by Step Solution

1. Step 1: Write the proportion equation
   55,890.50 : 84,558 = 84,558 : x
2. Step 2: Convert to fraction form
   55,890.50/84,558 = 84,558/x
3. Step 3: Cross multiply
   55,890.50x = 84,558 × 84,558
4. Step 4: Simplify right side
   55,890.50x = 7,150,055,364
5. Step 5: Solve for x
   x = 7,150,055,364/55,890.50
6. Step 6: Final answer
   x = 127,929.71