Finding the Third Proportional to 609,240 and 1,320,072

Step by Step Solution

1. Step 1: Write the proportion equation
   609,240 : 1,320,072 = 1,320,072 : x
2. Step 2: Convert to fraction form
   609,240/1,320,072 = 1,320,072/x
3. Step 3: Cross multiply
   609,240x = 1,320,072 × 1,320,072
4. Step 4: Simplify right side
   609,240x = 1,742,590,085,184
5. Step 5: Solve for x
   x = 1,742,590,085,184/609,240
6. Step 6: Final answer
   x = 2,860,268.67