Finding the Third Proportional to 61,067 and 91,140

Step by Step Solution

1. Step 1: Write the proportion equation
   61,067 : 91,140 = 91,140 : x
2. Step 2: Convert to fraction form
   61,067/91,140 = 91,140/x
3. Step 3: Cross multiply
   61,067x = 91,140 × 91,140
4. Step 4: Simplify right side
   61,067x = 8,306,499,600
5. Step 5: Solve for x
   x = 8,306,499,600/61,067
6. Step 6: Final answer
   x = 136,022.72