Finding the Third Proportional to 55,431 and 83,727

Step by Step Solution

1. Step 1: Write the proportion equation
   55,431 : 83,727 = 83,727 : x
2. Step 2: Convert to fraction form
   55,431/83,727 = 83,727/x
3. Step 3: Cross multiply
   55,431x = 83,727 × 83,727
4. Step 4: Simplify right side
   55,431x = 7,010,210,529
5. Step 5: Solve for x
   x = 7,010,210,529/55,431
6. Step 6: Final answer
   x = 126,467.33