Finding the Third Proportional to 91,170.56 and 142,291.69

Step by Step Solution

1. Step 1: Write the proportion equation
   91,170.56 : 142,291.69 = 142,291.69 : x
2. Step 2: Convert to fraction form
   91,170.56/142,291.69 = 142,291.69/x
3. Step 3: Cross multiply
   91,170.56x = 142,291.69 × 142,291.69
4. Step 4: Simplify right side
   91,170.56x = 20,246,924,331.60
5. Step 5: Solve for x
   x = 20,246,924,331.60/91,170.56
6. Step 6: Final answer
   x = 222,077.43