Finding the Third Proportional to 91,188 and 142,317

Step by Step Solution

1. Step 1: Write the proportion equation
   91,188 : 142,317 = 142,317 : x
2. Step 2: Convert to fraction form
   91,188/142,317 = 142,317/x
3. Step 3: Cross multiply
   91,188x = 142,317 × 142,317
4. Step 4: Simplify right side
   91,188x = 20,254,128,489
5. Step 5: Solve for x
   x = 20,254,128,489/91,188
6. Step 6: Final answer
   x = 222,113.97