Finding the Third Proportional to 728,281 and 1,139,959

Step by Step Solution

1. Step 1: Write the proportion equation
   728,281 : 1,139,959 = 1,139,959 : x
2. Step 2: Convert to fraction form
   728,281/1,139,959 = 1,139,959/x
3. Step 3: Cross multiply
   728,281x = 1,139,959 × 1,139,959
4. Step 4: Simplify right side
   728,281x = 1,299,506,521,681
5. Step 5: Solve for x
   x = 1,299,506,521,681/728,281
6. Step 6: Final answer
   x = 1,784,347.69