Finding the Third Proportional to 91,516 and 200,528

Step by Step Solution

1. Step 1: Write the proportion equation
   91,516 : 200,528 = 200,528 : x
2. Step 2: Convert to fraction form
   91,516/200,528 = 200,528/x
3. Step 3: Cross multiply
   91,516x = 200,528 × 200,528
4. Step 4: Simplify right side
   91,516x = 40,211,478,784
5. Step 5: Solve for x
   x = 40,211,478,784/91,516
6. Step 6: Final answer
   x = 439,392.88