Finding the Third Proportional to 747,240 and 1,128,648

Step by Step Solution

1. Step 1: Write the proportion equation
   747,240 : 1,128,648 = 1,128,648 : x
2. Step 2: Convert to fraction form
   747,240/1,128,648 = 1,128,648/x
3. Step 3: Cross multiply
   747,240x = 1,128,648 × 1,128,648
4. Step 4: Simplify right side
   747,240x = 1,273,846,307,904
5. Step 5: Solve for x
   x = 1,273,846,307,904/747,240
6. Step 6: Final answer
   x = 1,704,735.17