Finding the Third Proportional to 88,308 and 189,242

Step by Step Solution

1. Step 1: Write the proportion equation
   88,308 : 189,242 = 189,242 : x
2. Step 2: Convert to fraction form
   88,308/189,242 = 189,242/x
3. Step 3: Cross multiply
   88,308x = 189,242 × 189,242
4. Step 4: Simplify right side
   88,308x = 35,812,534,564
5. Step 5: Solve for x
   x = 35,812,534,564/88,308
6. Step 6: Final answer
   x = 405,541.23