Finding the Third Proportional to 1,057,440 and 1,507,428

Step by Step Solution

1. Step 1: Write the proportion equation
   1,057,440 : 1,507,428 = 1,507,428 : x
2. Step 2: Convert to fraction form
   1,057,440/1,507,428 = 1,507,428/x
3. Step 3: Cross multiply
   1,057,440x = 1,507,428 × 1,507,428
4. Step 4: Simplify right side
   1,057,440x = 2,272,339,175,184
5. Step 5: Solve for x
   x = 2,272,339,175,184/1,057,440
6. Step 6: Final answer
   x = 2,148,906.01