Finding the Third Proportional to 1,238,428 and 1,743,978

Step by Step Solution

1. Step 1: Write the proportion equation
   1,238,428 : 1,743,978 = 1,743,978 : x
2. Step 2: Convert to fraction form
   1,238,428/1,743,978 = 1,743,978/x
3. Step 3: Cross multiply
   1,238,428x = 1,743,978 × 1,743,978
4. Step 4: Simplify right side
   1,238,428x = 3,041,459,264,484
5. Step 5: Solve for x
   x = 3,041,459,264,484/1,238,428
6. Step 6: Final answer
   x = 2,455,903.18