Finding the Third Proportional to 280,827 and 612,967.50

Step by Step Solution

1. Step 1: Write the proportion equation
   280,827 : 612,967.50 = 612,967.50 : x
2. Step 2: Convert to fraction form
   280,827/612,967.50 = 612,967.50/x
3. Step 3: Cross multiply
   280,827x = 612,967.50 × 612,967.50
4. Step 4: Simplify right side
   280,827x = 375,729,156,056.25
5. Step 5: Solve for x
   x = 375,729,156,056.25/280,827
6. Step 6: Final answer
   x = 1,337,938.15