Finding the Third Proportional to 1,139,520 and 1,771,440

Step by Step Solution

1. Step 1: Write the proportion equation
   1,139,520 : 1,771,440 = 1,771,440 : x
2. Step 2: Convert to fraction form
   1,139,520/1,771,440 = 1,771,440/x
3. Step 3: Cross multiply
   1,139,520x = 1,771,440 × 1,771,440
4. Step 4: Simplify right side
   1,139,520x = 3,137,999,673,600
5. Step 5: Solve for x
   x = 3,137,999,673,600/1,139,520
6. Step 6: Final answer
   x = 2,753,790.78