Finding the Third Proportional to 55,422 and 83,715

Step by Step Solution

1. Step 1: Write the proportion equation
   55,422 : 83,715 = 83,715 : x
2. Step 2: Convert to fraction form
   55,422/83,715 = 83,715/x
3. Step 3: Cross multiply
   55,422x = 83,715 × 83,715
4. Step 4: Simplify right side
   55,422x = 7,008,201,225
5. Step 5: Solve for x
   x = 7,008,201,225/55,422
6. Step 6: Final answer
   x = 126,451.61