Finding the Third Proportional to 91,904 and 189,556

Step by Step Solution

1. Step 1: Write the proportion equation
   91,904 : 189,556 = 189,556 : x
2. Step 2: Convert to fraction form
   91,904/189,556 = 189,556/x
3. Step 3: Cross multiply
   91,904x = 189,556 × 189,556
4. Step 4: Simplify right side
   91,904x = 35,931,477,136
5. Step 5: Solve for x
   x = 35,931,477,136/91,904
6. Step 6: Final answer
   x = 390,967.50