Finding the Third Proportional to 250,718 and 522,172

Step by Step Solution

1. Step 1: Write the proportion equation
   250,718 : 522,172 = 522,172 : x
2. Step 2: Convert to fraction form
   250,718/522,172 = 522,172/x
3. Step 3: Cross multiply
   250,718x = 522,172 × 522,172
4. Step 4: Simplify right side
   250,718x = 272,663,597,584
5. Step 5: Solve for x
   x = 272,663,597,584/250,718
6. Step 6: Final answer
   x = 1,087,531.00