Finding the Third Proportional to 91,350 and 199,300

Step by Step Solution

1. Step 1: Write the proportion equation
   91,350 : 199,300 = 199,300 : x
2. Step 2: Convert to fraction form
   91,350/199,300 = 199,300/x
3. Step 3: Cross multiply
   91,350x = 199,300 × 199,300
4. Step 4: Simplify right side
   91,350x = 39,720,490,000
5. Step 5: Solve for x
   x = 39,720,490,000/91,350
6. Step 6: Final answer
   x = 434,816.53