Finding the Third Proportional to 543,720 and 1,279,272

Step by Step Solution

1. Step 1: Write the proportion equation
   543,720 : 1,279,272 = 1,279,272 : x
2. Step 2: Convert to fraction form
   543,720/1,279,272 = 1,279,272/x
3. Step 3: Cross multiply
   543,720x = 1,279,272 × 1,279,272
4. Step 4: Simplify right side
   543,720x = 1,636,536,849,984
5. Step 5: Solve for x
   x = 1,636,536,849,984/543,720
6. Step 6: Final answer
   x = 3,009,889.01