Finding the Third Proportional to 61,070 and 91,142

Step by Step Solution

1. Step 1: Write the proportion equation
   61,070 : 91,142 = 91,142 : x
2. Step 2: Convert to fraction form
   61,070/91,142 = 91,142/x
3. Step 3: Cross multiply
   61,070x = 91,142 × 91,142
4. Step 4: Simplify right side
   61,070x = 8,306,864,164
5. Step 5: Solve for x
   x = 8,306,864,164/61,070
6. Step 6: Final answer
   x = 136,022.01