Finding the Third Proportional to 280,624 and 498,915.50

Step by Step Solution

1. Step 1: Write the proportion equation
   280,624 : 498,915.50 = 498,915.50 : x
2. Step 2: Convert to fraction form
   280,624/498,915.50 = 498,915.50/x
3. Step 3: Cross multiply
   280,624x = 498,915.50 × 498,915.50
4. Step 4: Simplify right side
   280,624x = 248,916,676,140.25
5. Step 5: Solve for x
   x = 248,916,676,140.25/280,624
6. Step 6: Final answer
   x = 887,011.36