Finding the Third Proportional to 91,018.13 and 142,471.69

Step by Step Solution

1. Step 1: Write the proportion equation
   91,018.13 : 142,471.69 = 142,471.69 : x
2. Step 2: Convert to fraction form
   91,018.13/142,471.69 = 142,471.69/x
3. Step 3: Cross multiply
   91,018.13x = 142,471.69 × 142,471.69
4. Step 4: Simplify right side
   91,018.13x = 20,298,181,739.10
5. Step 5: Solve for x
   x = 20,298,181,739.10/91,018.13
6. Step 6: Final answer
   x = 223,012.52