Finding the Third Proportional to 90,087 and 208,528

Step by Step Solution

1. Step 1: Write the proportion equation
   90,087 : 208,528 = 208,528 : x
2. Step 2: Convert to fraction form
   90,087/208,528 = 208,528/x
3. Step 3: Cross multiply
   90,087x = 208,528 × 208,528
4. Step 4: Simplify right side
   90,087x = 43,483,926,784
5. Step 5: Solve for x
   x = 43,483,926,784/90,087
6. Step 6: Final answer
   x = 482,688.14