Finding the Third Proportional to 60,172 and 91,042

Step by Step Solution

1. Step 1: Write the proportion equation
   60,172 : 91,042 = 91,042 : x
2. Step 2: Convert to fraction form
   60,172/91,042 = 91,042/x
3. Step 3: Cross multiply
   60,172x = 91,042 × 91,042
4. Step 4: Simplify right side
   60,172x = 8,288,645,764
5. Step 5: Solve for x
   x = 8,288,645,764/60,172
6. Step 6: Final answer
   x = 137,749.21