Finding the Third Proportional to 591,128 and 1,266,272

Step by Step Solution

1. Step 1: Write the proportion equation
   591,128 : 1,266,272 = 1,266,272 : x
2. Step 2: Convert to fraction form
   591,128/1,266,272 = 1,266,272/x
3. Step 3: Cross multiply
   591,128x = 1,266,272 × 1,266,272
4. Step 4: Simplify right side
   591,128x = 1,603,444,777,984
5. Step 5: Solve for x
   x = 1,603,444,777,984/591,128
6. Step 6: Final answer
   x = 2,712,517.05