Finding the Third Proportional to 611,514 and 899,280

Step by Step Solution

1. Step 1: Write the proportion equation
   611,514 : 899,280 = 899,280 : x
2. Step 2: Convert to fraction form
   611,514/899,280 = 899,280/x
3. Step 3: Cross multiply
   611,514x = 899,280 × 899,280
4. Step 4: Simplify right side
   611,514x = 808,704,518,400
5. Step 5: Solve for x
   x = 808,704,518,400/611,514
6. Step 6: Final answer
   x = 1,322,462.80