Finding the Third Proportional to 55,320 and 83,816

Step by Step Solution

1. Step 1: Write the proportion equation
   55,320 : 83,816 = 83,816 : x
2. Step 2: Convert to fraction form
   55,320/83,816 = 83,816/x
3. Step 3: Cross multiply
   55,320x = 83,816 × 83,816
4. Step 4: Simplify right side
   55,320x = 7,025,121,856
5. Step 5: Solve for x
   x = 7,025,121,856/55,320
6. Step 6: Final answer
   x = 126,990.63