Finding the Third Proportional to 57,218 and 87,528

Step by Step Solution

1. Step 1: Write the proportion equation
   57,218 : 87,528 = 87,528 : x
2. Step 2: Convert to fraction form
   57,218/87,528 = 87,528/x
3. Step 3: Cross multiply
   57,218x = 87,528 × 87,528
4. Step 4: Simplify right side
   57,218x = 7,661,150,784
5. Step 5: Solve for x
   x = 7,661,150,784/57,218
6. Step 6: Final answer
   x = 133,894.07