Finding the Third Proportional to 909,536 and 1,272,240

Step by Step Solution

1. Step 1: Write the proportion equation
   909,536 : 1,272,240 = 1,272,240 : x
2. Step 2: Convert to fraction form
   909,536/1,272,240 = 1,272,240/x
3. Step 3: Cross multiply
   909,536x = 1,272,240 × 1,272,240
4. Step 4: Simplify right side
   909,536x = 1,618,594,617,600
5. Step 5: Solve for x
   x = 1,618,594,617,600/909,536
6. Step 6: Final answer
   x = 1,779,582.80